takes Healthcare Cost and Utilization Project Core files in ASCII format and describes the field structure
for users who have purchased Healthcare Cost and Utilization Project Database but do not have access to SAS, SPSS, or Stata. The following scripts will allow a user to use R to read the Core files in ASCII format as fixed width format and describe the field structure. It is important to note that each year is unique. descriptions of core files by year can be found at https://www.hcup-us.ahrq.gov/db/nation/nis/nisfilespecs.jsp
required package: https://cran.r-project.org/web/packages/readr/index.html