Hello,

I have run psmatch2 on my observational dataset and would appreciate some guidance on how to use the new variables created by the psmatch2 command for ensuring survival regression analysis.

psmatch2 raceb i.aged i.sex i.geogr, logit odds neighbor(3) ai(3)

- How can I can identify the matched dataset so that I can re-use for my analysis purposes?

- For example, for COX regression and log-rank test for my treatment variable?
* Do i need to stset to a subset of the dataset? based on which variable?
* Should i stratify stcox ? according to which variable? _pscore?
- For the log-rank test, should i stratify according to _pscore?

many thanks
Arnaud