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Overview

This is a data package with 17 medical datasets for teaching Reproducible Medical Research with R. The link to the pkgdown reference website for {medicaldata} is here and in the links at the right. This package will be useful for anyone teaching R to medical professionals, including doctors, nurses, trainees, and students.

These datasets range from reconstructed versions of James Lind’s scurvy dataset (1757) and the original Streptomycin for Tuberculosis trial (1948), a 2012 RCT of indomethacin to prevent post-ERCP pancreatitis that I was involved in, to cohort data on SARS-CoV2 testing results (2020). Many of the datasets come from the American Statistical Association’s TSHS (Teaching Statistics in the Health Sciences) Resources Portal, maintained by Carol Bigelow at the University of Massachusetts (with permission). A growing number of datasets in the dev version were generously donated by Frank Harrell from his website here. These datasets are currently only in the dev version of the package on github.com, which should make it to CRAN in June of 2022.

How to Install and Use {medicaldata} Datasets

  1. Install the stable, current CRAN version with install.packages("medicaldata"). If you want to try out the in-development version (which may have new datasets and vignettes, but which may also be intermittently wonky), install with: remotes::install_github("higgi13425/medicaldata")

  2. Then load the package with library(medicaldata)

  3. Then you can list the datasets available with data(package = "medicaldata")

  4. Then assign a particular dataset to a named object in your environment with:
    covid <- medicaldata::covid_testing
    where covid is the name of the new object, and covid_testing is the name of the dataset.

  5. Articles (vignettes) on how to use the datasets can be found at the pkgdown website under the Articles tab.

  6. You can click on the links below to view the description document and/or codebook for each dataset. This information is also available under the Reference tab above, or within R by using help(dataset_name).

Please Donate Datasets

If you have access to data from a randomized, controlled clinical trial, or a prospective cohort study, or even a case-control study, please consider obtaining the appropriate permissions, anonymizing the data, and donating the dataset for teaching purposes to add to this package. Open an issue on the github page (source code link at the top right) to open the discussion of a data donation. I am happy to help with anonymization.

List of Datasets

Click on links below for more details about the dataset itself in the Description Document, and more details about the variables included in the dataset in the Codebook. Note that each dataset also has a help file that you can use within R or RStudio, by entering help("dataset_name") in the Console pane. The fourth column of the table below (scroll to the right or widen your browser window) describes the study design, as requested by Dan Sjoberg of {gtsummary} fame.

Dataset Description document Codebook Design
strep_tb strep_tb_desc strep_tb_codebook Randomized Controlled Trial (RCT)
scurvy scurvy_desc scurvy_codebook RCT
indo_rct indo_rct_desc indo_rct_codebook RCT
polyps polyps_desc polyps_codebook RCT
covid_testing covid_desc covid_codebook Retrospective cross-sectional
blood_storage blood_storage_desc blood_storage_codebook Retrospective Cohort Study
cytomegalovirus cytomegalovirus_desc cytomegalovirus_codebook Retrospective Cohort Study
esoph_ca esoph_ca_desc esoph_ca_codebook Case-control study
laryngoscope laryngoscope_desc laryngoscope_codebook RCT
licorice_gargle licorice_gargle_desc licorice_gargle_codebook RCT
opt opt_desc opt_codebook RCT
cath (dev) cath_desc cath_codebook Retrospective Cohort Study
smartpill smartpill_desc smartpill_codebook Prospective Cohort Study
supraclavicular supraclavicular_desc supraclavicular_codebook RCT
indometh indometh_desc indometh_codebook Prospective Cohort Pharmacokinetic (PK) Study
theoph theoph_desc theoph_codebook Prospective Cohort PK Study
diabetes (dev) theoph_desc theoph_codebook Prospective Longitudinal Cohort Study
abm (dev) theoph_desc theoph_codebook Retrospective Cohort Study

Messy Datasets

I am doing a beta test of messy datasets, largely in Excel, with many annoying non-tidy and non-rectangular features that will help teach data cleaning/wrangling. These are not actually in the package itself (as they are not R files), but can be found in the GitHub repository.

You can download and open these from the GitHub repo in all of their messy Excel glory by clicking on the URL links in the table below. You can also find them here in the list on the GitHub repo, where you can click on one of the *.xlsx files, then click on the View Raw button to download it.

You can read these datasets directly into R from the urls in the table below with the example code found in the following code chunk, which reads in the messy_infarct dataset and assigns it to the object infarct.

# install.packages('openxlsx')
# if not already installed
library(openxlsx)
url <- "https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_infarct.xlsx"
# replace the filename "messy_infarct.xlsx" at the end of this long url path with the filename that you want to load. 
# Or just copy the whole path from the URL column below.
infarct <- openxlsx::read.xlsx(url)
head(infarct)

Available Messy Datasets (beta)

Dataset URL Type of Messiness
messy_cirrhosis https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_infarct.xlsx Pivot Table
messy_infarct https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_infarct.xlsx Pivot Table
messy_aki https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_aki.xlsx unique ids, header and footer rows, empty rows & cols, messy varnames, no units, typos in factors, visit date in headers, dates
messy_bp https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_bp.xlsx unite and separate, vars without units, visit num in headers, data entry errors
messy_glucose https://github.com/higgi13425/medicaldata/raw/master/data-raw/messy_data/messy_glucose.xlsx factors, vars without units, visit num in headers, header rows, empty rows/cols