Read Me File

Download the zip file to an appropriate directory.
Open up R and go to the menu Packages, drop down to Install Package(s) from local zip file.
Choose the zip file you downloaded. R will automatically download any necessary packages from the Internet that are needed to install NestedCohort.
To use the functions in NestedCohort in each R session, type library (NestedCohort) to attach the library so your R session can find the functions.