topic difference in difference model with difference pre and post periods in Statistical Procedures

Difference-in-difference with different pre - and post - periods

fama — Wed, 21 Mar 2018 13:41:39 GMT

Hi every one,

I have a question regarding DID estimation model.

I created a data set using propensity score matching (psm) for observations that a same treatment happened to them in different period of time. If the treatment happened in period 2 we compare outcome of period 3 and 1 in treated and matched control groups.

recall treatment only happened in period2, 3 and 4.

Now i want to use DID model using proc glm or proc mixed etc to investigate the effect of treatment on outcome.

your help will be appreciated.

Thanks

OBS perid1 period2 period3 period 4 period 5 treatment MatchID outcomes for all periods and other covariates

1 1 2 2 . . yes

2 1 1 1 NO

difference in difference model with difference pre and post periods

fama — Wed, 21 Mar 2018 13:51:05 GMT

Hi every one,

I have a question regarding DID estimation model.

recall treatment only happened in period2, 3 and 4.

Now i want to use DID model using proc glm or proc mixed etc to investigate the effect of treatment on outcome.

your help will be appreciated.

Thanks

OBS perid1 period2 period3 period 4 period 5 treatment MatchID outcomes for all periods and other covariates

1 1 2 2 . . yes

2 1 1 1 N

Re: Difference-in-difference with different pre - and post - periods

Kurt_Bremser — Wed, 21 Mar 2018 13:56:42 GMT

I merged your posts and moved them to the Statistical Procedures community.

Re: Difference-in-difference with different pre - and post - periods

fama — Wed, 21 Mar 2018 14:00:34 GMT

Thanks