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Closes #2532 Update Forumula for Body Surface Area #2541

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Closes #2532 Update Forumula for Body Surface Area #2541

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47aa06e
Made small change in BuBois-DuBois formula for surface area (derive_a…
jimrothstein Oct 24, 2024
3b3c2dc
ran document()
jimrothstein Oct 24, 2024
b6e2c18
use new DuBois-DuBois equation in test_that
jimrothstein Oct 24, 2024
4595cf6
run styler::styler_pkg()
jimrothstein Oct 24, 2024
1f86d84
Add to NEWS.md
jimrothstein Oct 25, 2024
fadf8c6
Put news under "Updates of Existing Functions"
jimrothstein Oct 25, 2024
ff89321
With revised DuBois-DuBois formula using meters, change units from "c…
jimrothstein Oct 29, 2024
501489d
undo (restore) incorrect changes to
jimrothstein Oct 29, 2024
ea209cc
Correct comments (HEIGHT units are in cm); NEWS.md
jimrothstein Oct 29, 2024
7561b0d
Correct NEWS.md conflict
jimrothstein Oct 29, 2024
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4 changes: 2 additions & 2 deletions R/derive_advs_params.R
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Original file line number Diff line number Diff line change
Expand Up @@ -462,7 +462,7 @@ derive_param_bsa <- function(dataset,
#'
#' Mosteller: sqrt(height * weight / 3600)
#'
#' DuBois-DuBois: 0.20247 * (height/100) ^ 0.725 * weight ^ 0.425
#' DuBois-DuBois: 0.007184 * height ^ 0.725 * weight ^ 0.425
#'
#' Haycock: 0.024265 * height ^ 0.3964 * weight ^ 0.5378
#'
Expand Down Expand Up @@ -521,7 +521,7 @@ compute_bsa <- function(height = height,
} else if (method == "DuBois-DuBois") {
# The DuBois & DuBois formula expects the value of height in meters
# We need to convert from cm
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bsa <- 0.20247 * (height / 100)^0.725 * weight^0.425
bsa <- 0.007184 * height^0.725 * weight^0.425
} else if (method == "Haycock") {
bsa <- 0.024265 * height^0.3964 * weight^0.5378
} else if (method == "Gehan-George") {
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2 changes: 1 addition & 1 deletion man/compute_bsa.Rd
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4 changes: 2 additions & 2 deletions tests/testthat/test-derive_advs_params.R
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Expand Up @@ -54,7 +54,7 @@ test_that("compute_bsa Test 6: Mosteller method - height & weight vectors - miss
})

## compute_bsa: DuBois-DuBois method ----
# FORMULA : 0.20247 x (HGT/100)^0.725 x WGT^0.425
# FORMULA : 0.007184 x (HGT)^0.725 x WGT^0.425

## Test 7: DuBois-DuBois method - single height & weight values ----
test_that("compute_bsa Test 7: DuBois-DuBois method - single height & weight values", {
Expand Down Expand Up @@ -604,7 +604,7 @@ test_that("derive_param_bsa Test 44: BSA parameter (Mosteller Method) is correct
})

dubois <- function(hgt, wgt) {
0.20247 * (hgt / 100)^0.725 * wgt^0.425
0.007184 * hgt^0.725 * wgt^0.425
}

## Test 45: BSA parameter (DuBois-DuBois method) is correctly added ----
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