Hi,
I'm using DID from 2010 to 2018, and the treatment happened in 2014. (unit of analysis: county)
My treated and untreated are not balanced, and I want to do a matching on pre-treatment covariates with psmatch2.
Assume I run this code:
psmatch2 D x1 x2 x3 x4 if Year==2013, out(Y) ai(3) neighbor(3) caliper(.05)
It gives me _weight for counties in common support observations only in 2013.
How can I assign these weights across 2010 to 2018 for each county so that I would use those weights in my DID regression?
I would appreciate it if you give me an example of propensity score matching in a DID setting, where matching has been done on pretreated.
I'm using DID from 2010 to 2018, and the treatment happened in 2014. (unit of analysis: county)
My treated and untreated are not balanced, and I want to do a matching on pre-treatment covariates with psmatch2.
Assume I run this code:
psmatch2 D x1 x2 x3 x4 if Year==2013, out(Y) ai(3) neighbor(3) caliper(.05)
It gives me _weight for counties in common support observations only in 2013.
How can I assign these weights across 2010 to 2018 for each county so that I would use those weights in my DID regression?
I would appreciate it if you give me an example of propensity score matching in a DID setting, where matching has been done on pretreated.
