I would like to do a difference-in-differences analysis to compare units who received a treatment vs units who did not receive treatment. I found a good article that described how to do difference-in-differences in SAS; article can be found here The problem I have is that each unit received treatment at different dates; therefore, I have a staggered treatment design. The article describes how to do difference-in-differences if all units receive treatment at the same time, but I can't find how to run such an analysis when the treatment is staggered. I want to point out that creating the model in SAS isn't much of an issue for me. What I need assistance in is how to incorporate some of the newer methods that are described in the following article: https://cran.r-project.org/web/packages/did/vignettes/did-basics.html.    TLDR: Is there a guideline on how to run staggered DiD in SAS that uses the newer methods that were proposed by Callaway and Sant'Anna? ... View more