Hi all,
I am trying to conduct a PSM in STATA, I used following command in STATA:
psmatch2 treat control, out(roa) logit neighbor(1) common caliper(.001) ties
where treat is the treatment, control represent control variables.
The result presents some firms in the control group are matched to more than one firm in the treatment group, but I just want to retain the pair which the difference between the propensity score of the two firms is the smallest. So, I want to ask how can I retain the pair with smallest difference in propensity score, what kind of code may I use?
Thanks a lot for the help!
I am trying to conduct a PSM in STATA, I used following command in STATA:
psmatch2 treat control, out(roa) logit neighbor(1) common caliper(.001) ties
where treat is the treatment, control represent control variables.
The result presents some firms in the control group are matched to more than one firm in the treatment group, but I just want to retain the pair which the difference between the propensity score of the two firms is the smallest. So, I want to ask how can I retain the pair with smallest difference in propensity score, what kind of code may I use?
Thanks a lot for the help!
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