Dear Statalisters,
I attached my data (stata13). If you need other formats, let me know.
You will find 17 treated firms
you will find 17 treated, out of 1418 , 17 are matched.
_id identifies the treated firms
_n1 identifies the nearest neighbor matched to treated firms
gvkey is the unique identifier.
I want a output that keeps 17 treated and its matches.
I had an earlier post
http://www.statalist.org/forums/foru...-a-index-value
it works well there, thanks to William !!!
but now, I run the same code on the attached data, I got duplicates in gvkey , can you help?
Regards,
Rochelle
I attached my data (stata13). If you need other formats, let me know.
You will find 17 treated firms
:
tab _treated
_id identifies the treated firms
_n1 identifies the nearest neighbor matched to treated firms
gvkey is the unique identifier.
I want a output that keeps 17 treated and its matches.
I had an earlier post
http://www.statalist.org/forums/foru...-a-index-value
:
use full,clear drop if missing(_n1) drop treated1975 rename _id _id1 rename _n1 _id2 generate dummy = _n reshape long _id, i(dummy) j(j) drop dummy j merge 1:1 _id using treated1975, keep(matched) drop _merge save mergeddata,replace
it works well there, thanks to William !!!
but now, I run the same code on the attached data, I got duplicates in gvkey , can you help?
Regards,
Rochelle