I have a difference-in-differences analysis. My treatment is at the county level. Each county received the treatment at a certain point in time.
I want to proceed with a propensity score matching as an extension to get DiD-matching results . I know everything about PSM, however, I am not quite sure how to get the STATA command in order to:
- Generate Pre- and Post-treatment dummies since I don't have a treatment at one point in time; i.e. DD is staggered.
- Use the DD with pscore