Using R for Analyzing COVID-19 Clinical Trials from

Although I use R extensively in my work, samples can't be shared because of non-disclosure agreements with my clients. For this reason, I'm starting to build a portfolio of samples of my own work with R for data analysis and other tasks.

Since COVID-19 is in the news now and I have experience with from my work with a biotech startup (, it seemed like a good way to start.

Some techniques used daily include:
  • select to remove, order, rename columns
  • mutate to add columns or modify values in columns
  • filter to eliminate rows from a data frame
  • arrange to order rows in a data frame
  • group_by and summarize to pivot
  • replace_na to replace NA with (typically) zeros
  • read_tsv (csv, etc.) to read delimited files
  • packages readxl and writexl to read and write Excel files
Many more examples to come, but I wanted to post something as a starting point.