This book is, of course, for people who already know Stata. It may also beuseful to R users wishing to learn Stata. However, we explain none of theStata programs, only the R ones and how the packages differ, so it is not idealfor that purpose.This book is based on R for SAS and SPSS Users [34]. However, there isquite a bit of additional material covered here, and, of course, the comparativecoverage is completely different.