From 71e929639c3f0e223ecc3f88149fedcb215349de Mon Sep 17 00:00:00 2001
From: GitHub Actions <actions@github.com>
Date: Fri, 10 May 2024 09:56:56 +0000
Subject: [PATCH] site deploy

Auto-generated via {sandpaper}
Source  : 757464c11ca214a2e039f67af82edf44274c946e
Branch  : md-outputs
Author  : GitHub Actions <actions@github.com>
Time    : 2024-05-10 09:56:26 +0000
Message : markdown source builds

Auto-generated via {sandpaper}
Source  : ce32b3ad6c8167c1828b51e6efd1df5fff600765
Branch  : main
Author  : Milan Malfait <m.malfait@ucl.ac.uk>
Time    : 2024-05-10 09:54:08 +0000
Message : Update 23 packages (#36)

Co-authored-by: milanmlft <milanmlft@users.noreply.github.com>
---
 01-rstudio-intro.html                    | 18 ++---
 02-project-intro.html                    |  8 +--
 03-seeking-help.html                     | 14 ++--
 04-data-structures-part1.html            |  6 +-
 05-data-structures-part2.html            |  6 +-
 06-data-subsetting.html                  |  6 +-
 07-control-flow.html                     |  6 +-
 08-plot-ggplot2.html                     |  6 +-
 09-vectorization.html                    | 14 ++--
 10-functions.html                        |  6 +-
 11-writing-data.html                     | 10 +--
 12-dplyr.html                            |  6 +-
 13-tidyr.html                            | 12 ++--
 14-knitr-markdown.html                   | 14 ++--
 15-wrap-up.html                          |  6 +-
 404.html                                 |  4 +-
 CODE_OF_CONDUCT.html                     |  6 +-
 LICENSE.html                             |  6 +-
 aio.html                                 | 82 +++++++++++------------
 discuss.html                             |  6 +-
 images.html                              |  4 +-
 index.html                               |  4 +-
 instructor-notes.html                    |  4 +-
 instructor/01-rstudio-intro.html         | 20 +++---
 instructor/02-project-intro.html         |  8 +--
 instructor/03-seeking-help.html          | 14 ++--
 instructor/04-data-structures-part1.html |  6 +-
 instructor/05-data-structures-part2.html |  6 +-
 instructor/06-data-subsetting.html       |  6 +-
 instructor/07-control-flow.html          |  6 +-
 instructor/08-plot-ggplot2.html          |  6 +-
 instructor/09-vectorization.html         | 14 ++--
 instructor/10-functions.html             |  6 +-
 instructor/11-writing-data.html          | 10 +--
 instructor/12-dplyr.html                 |  6 +-
 instructor/13-tidyr.html                 | 12 ++--
 instructor/14-knitr-markdown.html        | 14 ++--
 instructor/15-wrap-up.html               |  6 +-
 instructor/404.html                      |  4 +-
 instructor/CODE_OF_CONDUCT.html          |  6 +-
 instructor/LICENSE.html                  |  6 +-
 instructor/aio.html                      | 84 ++++++++++++------------
 instructor/discuss.html                  |  6 +-
 instructor/images.html                   |  4 +-
 instructor/index.html                    |  4 +-
 instructor/instructor-notes.html         |  4 +-
 instructor/key-points.html               |  4 +-
 instructor/profiles.html                 |  4 +-
 instructor/reference.html                |  6 +-
 key-points.html                          |  4 +-
 md5sum.txt                               | 50 +++++++-------
 pkgdown.yml                              |  2 +-
 profiles.html                            |  4 +-
 reference.html                           |  6 +-
 54 files changed, 296 insertions(+), 296 deletions(-)

diff --git a/01-rstudio-intro.html b/01-rstudio-intro.html
index 793df36b4..58e1c74fd 100644
--- a/01-rstudio-intro.html
+++ b/01-rstudio-intro.html
@@ -357,7 +357,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introduction to R and RStudio</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/01-rstudio-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -927,7 +927,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb44">
@@ -1076,7 +1076,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
     }
     else all.names
 }
-&lt;bytecode: 0x555acfeea9c8&gt;
+&lt;bytecode: 0x5650a736f918&gt;
 &lt;environment: namespace:base&gt;</code></pre>
 </div>
 <p>What’s going on here?</p>
@@ -1207,7 +1207,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb64">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1261,7 +1261,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1300,7 +1300,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>We can use the <code>rm</code> command to accomplish this task</p>
 <div class="codewrapper sourceCode" id="cb70">
@@ -1331,7 +1331,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>We can use the <code>install.packages()</code> command to install the
 required packages.</p>
@@ -1433,8 +1433,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/01-rstudio-intro.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/01-rstudio-intro.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/02-project-intro.html b/02-project-intro.html
index d2d703249..80e9e2aa6 100644
--- a/02-project-intro.html
+++ b/02-project-intro.html
@@ -348,7 +348,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Project Management With RStudio</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/02-project-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -597,7 +597,7 @@ <h3 class="code-label">SH<i aria-hidden="true" data-feather="chevron-left"></i><
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K Apr 25 13:25 data/gapminder_data.csv</code></pre>
+<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K May 10 09:55 data/gapminder_data.csv</code></pre>
 </div>
 <p>The file size is 80K.</p>
 <div class="codewrapper sourceCode" id="cb3">
@@ -783,8 +783,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/02-project-intro.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/02-project-intro.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/03-seeking-help.html b/03-seeking-help.html
index 2937c95eb..59fed57b1 100644
--- a/03-seeking-help.html
+++ b/03-seeking-help.html
@@ -352,7 +352,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Seeking Help</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/03-seeking-help.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -561,7 +561,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 [1] stats     graphics  grDevices utils     datasets  methods   base     
 
 loaded via a namespace (and not attached):
-[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.45     xfun_0.43     
+[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.46     xfun_0.43     
 [6] renv_1.0.7     evaluate_0.23 </code></pre>
 </div>
 <p>Will print out your current version of R, as well as any packages you
@@ -593,7 +593,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>c()</code> function creates a vector, in which all elements
 are of the same type. In the first case, the elements are numeric, in
@@ -622,7 +622,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>To look at the help for the <code>paste()</code> function, use:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -730,7 +730,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The standard R function for reading tab-delimited files with a period
 decimal separator is read.delim(). You can also do this with
@@ -818,8 +818,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/03-seeking-help.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/03-seeking-help.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/04-data-structures-part1.html b/04-data-structures-part1.html
index faac55e2d..3283fb4e1 100644
--- a/04-data-structures-part1.html
+++ b/04-data-structures-part1.html
@@ -347,7 +347,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Structures</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/04-data-structures-part1.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -2330,8 +2330,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/04-data-structures-part1.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/04-data-structures-part1.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/05-data-structures-part2.html b/05-data-structures-part2.html
index 5e0fedc1b..0612c499e 100644
--- a/05-data-structures-part2.html
+++ b/05-data-structures-part2.html
@@ -350,7 +350,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Exploring Data Frames</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/05-data-structures-part2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1143,8 +1143,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/05-data-structures-part2.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/05-data-structures-part2.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/06-data-subsetting.html b/06-data-subsetting.html
index cc0ef6de0..ddddccd3a 100644
--- a/06-data-subsetting.html
+++ b/06-data-subsetting.html
@@ -355,7 +355,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Subsetting Data</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/06-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1939,8 +1939,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/06-data-subsetting.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/06-data-subsetting.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/07-control-flow.html b/07-control-flow.html
index 8b7c023be..29bf0b9ad 100644
--- a/07-control-flow.html
+++ b/07-control-flow.html
@@ -346,7 +346,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Control Flow</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/07-control-flow.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1199,8 +1199,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/07-control-flow.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/07-control-flow.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/08-plot-ggplot2.html b/08-plot-ggplot2.html
index b1bf55400..41499d8b9 100644
--- a/08-plot-ggplot2.html
+++ b/08-plot-ggplot2.html
@@ -350,7 +350,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating Publication-Quality Graphics with ggplot2</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/08-plot-ggplot2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1057,8 +1057,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/08-plot-ggplot2.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/08-plot-ggplot2.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/09-vectorization.html b/09-vectorization.html
index 2ab8c4408..243a8d5e2 100644
--- a/09-vectorization.html
+++ b/09-vectorization.html
@@ -339,7 +339,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Vectorization</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/09-vectorization.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -463,7 +463,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Let’s try this on the <code>pop</code> column of the
 <code>gapminder</code> dataset.</p>
@@ -513,7 +513,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Refresh your plotting skills by plotting population in millions
 against year.</p>
@@ -690,7 +690,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Given the following matrix:</p>
 <div class="codewrapper sourceCode" id="cb28">
@@ -767,7 +767,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We’re interested in looking at the sum of the following sequence of
 fractions:</p>
@@ -976,8 +976,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/09-vectorization.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/09-vectorization.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/10-functions.html b/10-functions.html
index c695fecd2..98aeb4af0 100644
--- a/10-functions.html
+++ b/10-functions.html
@@ -349,7 +349,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Functions Explained</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/10-functions.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1175,8 +1175,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/10-functions.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/10-functions.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/11-writing-data.html b/11-writing-data.html
index c58a6bf09..95bcf0b76 100644
--- a/11-writing-data.html
+++ b/11-writing-data.html
@@ -347,7 +347,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Writing Data</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/11-writing-data.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -436,7 +436,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb3">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -560,7 +560,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb11">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -647,8 +647,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/11-writing-data.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/11-writing-data.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/12-dplyr.html b/12-dplyr.html
index 3ca741339..1564df75c 100644
--- a/12-dplyr.html
+++ b/12-dplyr.html
@@ -355,7 +355,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/12-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1202,8 +1202,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/12-dplyr.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/12-dplyr.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/13-tidyr.html b/13-tidyr.html
index bd9d97f00..17a21d56d 100644
--- a/13-tidyr.html
+++ b/13-tidyr.html
@@ -349,7 +349,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Frame Manipulation with tidyr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/13-tidyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -461,7 +461,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The original gapminder data.frame is in an intermediate format. It is
 not purely long since it had multiple observation variables
@@ -653,7 +653,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -949,7 +949,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb37">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1122,8 +1122,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/13-tidyr.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/13-tidyr.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/14-knitr-markdown.html b/14-knitr-markdown.html
index b661c0543..7ae90377b 100644
--- a/14-knitr-markdown.html
+++ b/14-knitr-markdown.html
@@ -357,7 +357,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Producing Reports With knitr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/14-knitr-markdown.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -537,7 +537,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>In RStudio, select File &gt; New file &gt; R Markdown…</p>
 <p>Delete the placeholder text and add the following:</p>
@@ -614,7 +614,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <pre>
 ```{r load-ggplot2}
@@ -700,7 +700,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <pre>
 ```{r echo = FALSE, fig.width = 3}
@@ -748,7 +748,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>Here’s some inline code to determine that 2 + 2 = <code>4</code>.</p>
 </div>
@@ -895,8 +895,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/14-knitr-markdown.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/14-knitr-markdown.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/15-wrap-up.html b/15-wrap-up.html
index 634d51f2a..70926d6a9 100644
--- a/15-wrap-up.html
+++ b/15-wrap-up.html
@@ -353,7 +353,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Writing Good Software</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/15-wrap-up.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -551,8 +551,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/15-wrap-up.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/15-wrap-up.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/404.html b/404.html
index 310d8bdb5..836d8574d 100644
--- a/404.html
+++ b/404.html
@@ -413,8 +413,8 @@ <h1>Page not found</h1>
   "url": "https://UCL.github.io/ClinicianCoders/404.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/404.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-05-07",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 901379d54..136d58e12 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -335,7 +335,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -414,8 +414,8 @@ <h1>Contributor Code of Conduct</h1>
   "url": "https://UCL.github.io/ClinicianCoders/CODE_OF_CONDUCT.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/CODE_OF_CONDUCT.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/LICENSE.html b/LICENSE.html
index 61f11dcb8..87478b0e6 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -335,7 +335,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -465,8 +465,8 @@ <h1>Licenses</h1>
   "url": "https://UCL.github.io/ClinicianCoders/LICENSE.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/LICENSE.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/aio.html b/aio.html
index d3809ce3e..1309674eb 100644
--- a/aio.html
+++ b/aio.html
@@ -413,7 +413,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-01-rstudio-intro"><p>Content from <a href="01-rstudio-intro.html">Introduction to R and RStudio</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/01-rstudio-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -1007,7 +1007,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb44">
@@ -1158,7 +1158,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
     }
     else all.names
 }
-&lt;bytecode: 0x555acfeea9c8&gt;
+&lt;bytecode: 0x5650a736f918&gt;
 &lt;environment: namespace:base&gt;</code></pre>
 </div>
 <p>What’s going on here?</p>
@@ -1292,7 +1292,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb64">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1346,7 +1346,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1385,7 +1385,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>We can use the <code>rm</code> command to accomplish this task</p>
 <div class="codewrapper sourceCode" id="cb70">
@@ -1416,7 +1416,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>We can use the <code>install.packages()</code> command to install the
 required packages.</p>
@@ -1464,7 +1464,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-02-project-intro"><p>Content from <a href="02-project-intro.html">Project Management With RStudio</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/02-project-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -1732,7 +1732,7 @@ <h3 class="code-label">SH<i aria-hidden="true" data-feather="chevron-left"></i><
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K Apr 25 13:25 data/gapminder_data.csv</code></pre>
+<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K May 10 09:55 data/gapminder_data.csv</code></pre>
 </div>
 <p>The file size is 80K.</p>
 <div class="codewrapper sourceCode" id="cb3">
@@ -1870,7 +1870,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-03-seeking-help"><p>Content from <a href="03-seeking-help.html">Seeking Help</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/03-seeking-help.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -2085,7 +2085,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 [1] stats     graphics  grDevices utils     datasets  methods   base     
 
 loaded via a namespace (and not attached):
-[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.45     xfun_0.43     
+[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.46     xfun_0.43     
 [6] renv_1.0.7     evaluate_0.23 </code></pre>
 </div>
 <p>Will print out your current version of R, as well as any packages you
@@ -2117,7 +2117,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>c()</code> function creates a vector, in which all elements
 are of the same type. In the first case, the elements are numeric, in
@@ -2146,7 +2146,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>To look at the help for the <code>paste()</code> function, use:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -2254,7 +2254,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The standard R function for reading tab-delimited files with a period
 decimal separator is read.delim(). You can also do this with
@@ -2291,7 +2291,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-04-data-structures-part1"><p>Content from <a href="04-data-structures-part1.html">Data Structures</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/04-data-structures-part1.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -4251,7 +4251,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-05-data-structures-part2"><p>Content from <a href="05-data-structures-part2.html">Exploring Data Frames</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/05-data-structures-part2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -5004,7 +5004,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-06-data-subsetting"><p>Content from <a href="06-data-subsetting.html">Subsetting Data</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/06-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -6578,7 +6578,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-07-control-flow"><p>Content from <a href="07-control-flow.html">Control Flow</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/07-control-flow.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -7378,7 +7378,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-08-plot-ggplot2"><p>Content from <a href="08-plot-ggplot2.html">Creating Publication-Quality Graphics with ggplot2</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/08-plot-ggplot2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -8044,7 +8044,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-09-vectorization"><p>Content from <a href="09-vectorization.html">Vectorization</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/09-vectorization.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -8166,7 +8166,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Let’s try this on the <code>pop</code> column of the
 <code>gapminder</code> dataset.</p>
@@ -8216,7 +8216,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Refresh your plotting skills by plotting population in millions
 against year.</p>
@@ -8396,7 +8396,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Given the following matrix:</p>
 <div class="codewrapper sourceCode" id="cb28">
@@ -8479,7 +8479,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We’re interested in looking at the sum of the following sequence of
 fractions:</p>
@@ -8630,7 +8630,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </div></section><section id="aio-10-functions"><p>Content from <a href="10-functions.html">Functions Explained</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/10-functions.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -9411,7 +9411,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-11-writing-data"><p>Content from <a href="11-writing-data.html">Writing Data</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/11-writing-data.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -9499,7 +9499,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb3">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -9624,7 +9624,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb11">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -9657,7 +9657,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-12-dplyr"><p>Content from <a href="12-dplyr.html">Data Frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/12-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -10462,7 +10462,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-13-tidyr"><p>Content from <a href="13-tidyr.html">Data Frame Manipulation with tidyr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/13-tidyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -10575,7 +10575,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The original gapminder data.frame is in an intermediate format. It is
 not purely long since it had multiple observation variables
@@ -10768,7 +10768,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11065,7 +11065,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb37">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11187,7 +11187,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-14-knitr-markdown"><p>Content from <a href="14-knitr-markdown.html">Producing Reports With knitr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/14-knitr-markdown.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -11374,7 +11374,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>In RStudio, select File &gt; New file &gt; R Markdown…</p>
 <p>Delete the placeholder text and add the following:</p>
@@ -11455,7 +11455,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <pre>
 ```{r load-ggplot2}
@@ -11545,7 +11545,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <pre>
 ```{r echo = FALSE, fig.width = 3}
@@ -11594,7 +11594,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>Here’s some inline code to determine that 2 + 2 = <code>4</code>.</p>
 </div>
@@ -11691,7 +11691,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-15-wrap-up"><p>Content from <a href="15-wrap-up.html">Writing Good Software</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/15-wrap-up.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -11889,8 +11889,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/aio.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/aio.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-05-07",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/discuss.html b/discuss.html
index 86bfe86e3..7200a5423 100644
--- a/discuss.html
+++ b/discuss.html
@@ -335,7 +335,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Discussion</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/learners/discuss.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -408,8 +408,8 @@ <h1>Discussion</h1>
   "url": "https://UCL.github.io/ClinicianCoders/discuss.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/discuss.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/images.html b/images.html
index 6251c77e2..4f76e10ab 100644
--- a/images.html
+++ b/images.html
@@ -598,8 +598,8 @@ <h3 id="14-knitr-markdown-figure-3">Figure 3</h3>
   "url": "https://UCL.github.io/ClinicianCoders/images.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/images.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-05-07",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index c45adf0aa..ad7153d3e 100644
--- a/index.html
+++ b/index.html
@@ -428,8 +428,8 @@ <h3 class="callout-title">Prerequisites<a class="anchor" aria-label="anchor" hre
   "url": "https://UCL.github.io/ClinicianCoders/index.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/index.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-05-07",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor-notes.html b/instructor-notes.html
index adb30cf20..addb2e4a7 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -605,8 +605,8 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   "url": "https://UCL.github.io/ClinicianCoders/instructor-notes.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor-notes.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-05-07",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/01-rstudio-intro.html b/instructor/01-rstudio-intro.html
index 4da9f8d93..a3515154a 100644
--- a/instructor/01-rstudio-intro.html
+++ b/instructor/01-rstudio-intro.html
@@ -357,7 +357,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introduction to R and RStudio</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/01-rstudio-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -929,7 +929,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb44">
@@ -1078,7 +1078,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
     }
     else all.names
 }
-&lt;bytecode: 0x555acfeea9c8&gt;
+&lt;bytecode: 0x5650a736f918&gt;
 &lt;environment: namespace:base&gt;</code></pre>
 </div>
 <p>What’s going on here?</p>
@@ -1209,7 +1209,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb64">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1263,7 +1263,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1302,7 +1302,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>We can use the <code>rm</code> command to accomplish this task</p>
 <div class="codewrapper sourceCode" id="cb70">
@@ -1333,7 +1333,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>We can use the <code>install.packages()</code> command to install the
 required packages.</p>
@@ -1363,7 +1363,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>When installing ggplot2, it may be required for some users to use the
 dependencies flag as a result of lazy loading affecting the install.
@@ -1457,8 +1457,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/01-rstudio-intro.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/01-rstudio-intro.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/02-project-intro.html b/instructor/02-project-intro.html
index 07ed49cf8..c415660da 100644
--- a/instructor/02-project-intro.html
+++ b/instructor/02-project-intro.html
@@ -348,7 +348,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Project Management With RStudio</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/02-project-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -599,7 +599,7 @@ <h3 class="code-label">SH<i aria-hidden="true" data-feather="chevron-left"></i><
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K Apr 25 13:25 data/gapminder_data.csv</code></pre>
+<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K May 10 09:55 data/gapminder_data.csv</code></pre>
 </div>
 <p>The file size is 80K.</p>
 <div class="codewrapper sourceCode" id="cb3">
@@ -785,8 +785,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/02-project-intro.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/02-project-intro.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/03-seeking-help.html b/instructor/03-seeking-help.html
index 9169393c4..8d13210cf 100644
--- a/instructor/03-seeking-help.html
+++ b/instructor/03-seeking-help.html
@@ -352,7 +352,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Seeking Help</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/03-seeking-help.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -563,7 +563,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 [1] stats     graphics  grDevices utils     datasets  methods   base     
 
 loaded via a namespace (and not attached):
-[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.45     xfun_0.43     
+[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.46     xfun_0.43     
 [6] renv_1.0.7     evaluate_0.23 </code></pre>
 </div>
 <p>Will print out your current version of R, as well as any packages you
@@ -595,7 +595,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>c()</code> function creates a vector, in which all elements
 are of the same type. In the first case, the elements are numeric, in
@@ -624,7 +624,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>To look at the help for the <code>paste()</code> function, use:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -732,7 +732,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The standard R function for reading tab-delimited files with a period
 decimal separator is read.delim(). You can also do this with
@@ -820,8 +820,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/03-seeking-help.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/03-seeking-help.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/04-data-structures-part1.html b/instructor/04-data-structures-part1.html
index 622226325..6e84eb139 100644
--- a/instructor/04-data-structures-part1.html
+++ b/instructor/04-data-structures-part1.html
@@ -347,7 +347,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Structures</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/04-data-structures-part1.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -2332,8 +2332,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/04-data-structures-part1.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/04-data-structures-part1.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/05-data-structures-part2.html b/instructor/05-data-structures-part2.html
index bd58974a3..bc69abe10 100644
--- a/instructor/05-data-structures-part2.html
+++ b/instructor/05-data-structures-part2.html
@@ -350,7 +350,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Exploring Data Frames</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/05-data-structures-part2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1145,8 +1145,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/05-data-structures-part2.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/05-data-structures-part2.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/06-data-subsetting.html b/instructor/06-data-subsetting.html
index 2bb86a7e4..d5f8a1a13 100644
--- a/instructor/06-data-subsetting.html
+++ b/instructor/06-data-subsetting.html
@@ -355,7 +355,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Subsetting Data</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/06-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1941,8 +1941,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/06-data-subsetting.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/06-data-subsetting.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/07-control-flow.html b/instructor/07-control-flow.html
index ed546bbf8..7668cadf1 100644
--- a/instructor/07-control-flow.html
+++ b/instructor/07-control-flow.html
@@ -346,7 +346,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Control Flow</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/07-control-flow.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1201,8 +1201,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/07-control-flow.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/07-control-flow.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/08-plot-ggplot2.html b/instructor/08-plot-ggplot2.html
index 0e4455de1..dcdb313ce 100644
--- a/instructor/08-plot-ggplot2.html
+++ b/instructor/08-plot-ggplot2.html
@@ -350,7 +350,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating Publication-Quality Graphics with ggplot2</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/08-plot-ggplot2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1059,8 +1059,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://UCL.github.io/ClinicianCoders/instructor/08-plot-ggplot2.html",
   "identifier": "https://UCL.github.io/ClinicianCoders/instructor/08-plot-ggplot2.html",
   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/09-vectorization.html b/instructor/09-vectorization.html
index 7ff538906..264008b19 100644
--- a/instructor/09-vectorization.html
+++ b/instructor/09-vectorization.html
@@ -339,7 +339,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Vectorization</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/09-vectorization.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -465,7 +465,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Let’s try this on the <code>pop</code> column of the
 <code>gapminder</code> dataset.</p>
@@ -515,7 +515,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Refresh your plotting skills by plotting population in millions
 against year.</p>
@@ -692,7 +692,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Given the following matrix:</p>
 <div class="codewrapper sourceCode" id="cb28">
@@ -769,7 +769,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We’re interested in looking at the sum of the following sequence of
 fractions:</p>
@@ -978,8 +978,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
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diff --git a/instructor/10-functions.html b/instructor/10-functions.html
index fb8997eba..9e88e7b51 100644
--- a/instructor/10-functions.html
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@@ -349,7 +349,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Functions Explained</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/10-functions.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1177,8 +1177,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
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diff --git a/instructor/11-writing-data.html b/instructor/11-writing-data.html
index 952e27e4d..f5fa1fe1f 100644
--- a/instructor/11-writing-data.html
+++ b/instructor/11-writing-data.html
@@ -347,7 +347,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Writing Data</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/11-writing-data.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -438,7 +438,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -562,7 +562,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="codewrapper sourceCode" id="cb11">
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@@ -649,8 +649,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
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diff --git a/instructor/12-dplyr.html b/instructor/12-dplyr.html
index dd7c479f8..1084b408e 100644
--- a/instructor/12-dplyr.html
+++ b/instructor/12-dplyr.html
@@ -355,7 +355,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/12-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1204,8 +1204,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
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diff --git a/instructor/13-tidyr.html b/instructor/13-tidyr.html
index b6a616433..53c31cd73 100644
--- a/instructor/13-tidyr.html
+++ b/instructor/13-tidyr.html
@@ -349,7 +349,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data Frame Manipulation with tidyr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/13-tidyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -463,7 +463,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The original gapminder data.frame is in an intermediate format. It is
 not purely long since it had multiple observation variables
@@ -655,7 +655,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -951,7 +951,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb37">
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@@ -1124,8 +1124,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
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diff --git a/instructor/14-knitr-markdown.html b/instructor/14-knitr-markdown.html
index e9d24ea55..da9dba42a 100644
--- a/instructor/14-knitr-markdown.html
+++ b/instructor/14-knitr-markdown.html
@@ -357,7 +357,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Producing Reports With knitr</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/14-knitr-markdown.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -539,7 +539,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>In RStudio, select File &gt; New file &gt; R Markdown…</p>
 <p>Delete the placeholder text and add the following:</p>
@@ -616,7 +616,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <pre>
 ```{r load-ggplot2}
@@ -702,7 +702,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
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-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <pre>
 ```{r echo = FALSE, fig.width = 3}
@@ -750,7 +750,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>Here’s some inline code to determine that 2 + 2 = <code>4</code>.</p>
 </div>
@@ -897,8 +897,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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-  "dateModified": "2024-04-25",
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 }
 
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diff --git a/instructor/15-wrap-up.html b/instructor/15-wrap-up.html
index b3986d97c..5d8ebce0b 100644
--- a/instructor/15-wrap-up.html
+++ b/instructor/15-wrap-up.html
@@ -353,7 +353,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Writing Good Software</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/15-wrap-up.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -553,8 +553,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
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diff --git a/instructor/404.html b/instructor/404.html
index 9f29e7650..01ddf4715 100644
--- a/instructor/404.html
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diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index 9e164cf71..a2ad30a35 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -335,7 +335,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -416,8 +416,8 @@ <h1>Contributor Code of Conduct</h1>
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-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
+  "datePublished": "2024-05-10"
 }
 
   </script><script>
diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 1d73e938c..33e416aa8 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -335,7 +335,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -467,8 +467,8 @@ <h1>Licenses</h1>
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   "dateCreated": "2023-10-26",
-  "dateModified": "2024-04-25",
-  "datePublished": "2024-05-07"
+  "dateModified": "2024-05-10",
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diff --git a/instructor/aio.html b/instructor/aio.html
index adfc8e94f..b2baffca2 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -415,7 +415,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-01-rstudio-intro"><p>Content from <a href="01-rstudio-intro.html">Introduction to R and RStudio</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/01-rstudio-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 55 minutes</p>
@@ -1010,7 +1010,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb44">
@@ -1161,7 +1161,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
     }
     else all.names
 }
-&lt;bytecode: 0x555acfeea9c8&gt;
+&lt;bytecode: 0x5650a736f918&gt;
 &lt;environment: namespace:base&gt;</code></pre>
 </div>
 <p>What’s going on here?</p>
@@ -1295,7 +1295,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="codewrapper sourceCode" id="cb64">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1349,7 +1349,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
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-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1388,7 +1388,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>We can use the <code>rm</code> command to accomplish this task</p>
 <div class="codewrapper sourceCode" id="cb70">
@@ -1419,7 +1419,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>We can use the <code>install.packages()</code> command to install the
 required packages.</p>
@@ -1449,7 +1449,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>When installing ggplot2, it may be required for some users to use the
 dependencies flag as a result of lazy loading affecting the install.
@@ -1489,7 +1489,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-02-project-intro"><p>Content from <a href="02-project-intro.html">Project Management With RStudio</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/02-project-intro.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 30 minutes</p>
@@ -1758,7 +1758,7 @@ <h3 class="code-label">SH<i aria-hidden="true" data-feather="chevron-left"></i><
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K Apr 25 13:25 data/gapminder_data.csv</code></pre>
+<pre class="output" tabindex="0"><code>-rw-r--r-- 1 runner docker 80K May 10 09:55 data/gapminder_data.csv</code></pre>
 </div>
 <p>The file size is 80K.</p>
 <div class="codewrapper sourceCode" id="cb3">
@@ -1896,7 +1896,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-03-seeking-help"><p>Content from <a href="03-seeking-help.html">Seeking Help</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/03-seeking-help.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
@@ -2112,7 +2112,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 [1] stats     graphics  grDevices utils     datasets  methods   base     
 
 loaded via a namespace (and not attached):
-[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.45     xfun_0.43     
+[1] compiler_4.3.3 tools_4.3.3    yaml_2.3.8     knitr_1.46     xfun_0.43     
 [6] renv_1.0.7     evaluate_0.23 </code></pre>
 </div>
 <p>Will print out your current version of R, as well as any packages you
@@ -2144,7 +2144,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>c()</code> function creates a vector, in which all elements
 are of the same type. In the first case, the elements are numeric, in
@@ -2173,7 +2173,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>To look at the help for the <code>paste()</code> function, use:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -2281,7 +2281,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>The standard R function for reading tab-delimited files with a period
 decimal separator is read.delim(). You can also do this with
@@ -2318,7 +2318,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-04-data-structures-part1"><p>Content from <a href="04-data-structures-part1.html">Data Structures</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/04-data-structures-part1.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 55 minutes</p>
@@ -4279,7 +4279,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-05-data-structures-part2"><p>Content from <a href="05-data-structures-part2.html">Exploring Data Frames</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/05-data-structures-part2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 30 minutes</p>
@@ -5033,7 +5033,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-06-data-subsetting"><p>Content from <a href="06-data-subsetting.html">Subsetting Data</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/06-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 50 minutes</p>
@@ -6608,7 +6608,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-07-control-flow"><p>Content from <a href="07-control-flow.html">Control Flow</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/07-control-flow.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 65 minutes</p>
@@ -7409,7 +7409,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-08-plot-ggplot2"><p>Content from <a href="08-plot-ggplot2.html">Creating Publication-Quality Graphics with ggplot2</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/08-plot-ggplot2.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 80 minutes</p>
@@ -8076,7 +8076,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-09-vectorization"><p>Content from <a href="09-vectorization.html">Vectorization</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/09-vectorization.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 25 minutes</p>
@@ -8199,7 +8199,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Let’s try this on the <code>pop</code> column of the
 <code>gapminder</code> dataset.</p>
@@ -8249,7 +8249,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Refresh your plotting skills by plotting population in millions
 against year.</p>
@@ -8429,7 +8429,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>Given the following matrix:</p>
 <div class="codewrapper sourceCode" id="cb28">
@@ -8512,7 +8512,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We’re interested in looking at the sum of the following sequence of
 fractions:</p>
@@ -8663,7 +8663,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </div></section><section id="aio-10-functions"><p>Content from <a href="10-functions.html">Functions Explained</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/10-functions.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 60 minutes</p>
@@ -9445,7 +9445,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-11-writing-data"><p>Content from <a href="11-writing-data.html">Writing Data</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/11-writing-data.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
@@ -9534,7 +9534,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb3">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -9659,7 +9659,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb11">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -9692,7 +9692,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-12-dplyr"><p>Content from <a href="12-dplyr.html">Data Frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/12-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 55 minutes</p>
@@ -10498,7 +10498,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-13-tidyr"><p>Content from <a href="13-tidyr.html">Data Frame Manipulation with tidyr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/13-tidyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 45 minutes</p>
@@ -10612,7 +10612,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The original gapminder data.frame is in an intermediate format. It is
 not purely long since it had multiple observation variables
@@ -10805,7 +10805,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11102,7 +11102,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb37">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11224,7 +11224,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-14-knitr-markdown"><p>Content from <a href="14-knitr-markdown.html">Producing Reports With knitr</a></p>
 <hr>
-<p>Last updated on 2024-04-25 |
+<p>Last updated on 2024-05-10 |
         
         <a href="https://github.com/UCL/ClinicianCoders/edit/main/episodes/14-knitr-markdown.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 75 minutes</p>
@@ -11412,7 +11412,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to Challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>In RStudio, select File &gt; New file &gt; R Markdown…</p>
 <p>Delete the placeholder text and add the following:</p>
@@ -11493,7 +11493,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to Challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <pre>
 ```{r load-ggplot2}
@@ -11583,7 +11583,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to Challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <pre>
 ```{r echo = FALSE, fig.width = 3}
@@ -11632,7 +11632,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to Challenge 4</h4>
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-        <p>Last updated on 2024-04-25 |
+        <p>Last updated on 2024-05-10 |
         
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