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st: RE: psmatch2 vs attk


From   Joe Canner <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: RE: psmatch2 vs attk
Date   Wed, 26 Mar 2014 14:11:38 +0000

Rossella,

It's hard to say for sure without seeing more details, but I see that you are using the -comsup- option for -attk-, but you are not using the corresponding -common- option for -psmatch2-.  Try adding that and see if it helps.

Regards,
Joe Canner
Johns Hopkins University School of Medicine

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Rossella Verzulli
Sent: Wednesday, March 26, 2014 9:58 AM
To: [email protected]
Subject: st: psmatch2 vs attk

Dear Statalist

I'm running the following commands to estimate the average treatment effects with the Kernel Matching method:

psmatch2 T, out(performance) kernel kerneltype(normal) pscore(mypscore)
attk performance T, normal pscore(mypscore) comsup

Does anybody know why psmatch2 and attk produce slightly different output?

I will very grateful for your advice.

Best,

Rossella

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