Hello,

I'm working on the survival analysis, using stteffects command (both LAC-IPWRA and WAC-IPWRA) in order to study the effect of drugA versus drugB on time to death in a retrospective cohort.

I want to evaluate the effect of such treatment on the survival time, and I have already got the results (ATE and POMs) from stteffects command.

However, I have the following question:

1. What are the difference between LAC-IPWRA and WAC-IPWRA should be considered before we apply on our data? because I found the different results between 2 estimators.

2. Can we construct the survival curve after stteffects commands (LAC-IPWRA or WAC-IPWRA)? or Are there any other ways to construct survival curve after stteffects commands?

3. Are there any ways to evaluate the performance of model after stteffects commands?


Any help or guidance would be greatly appreciated!!
Thank you