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st: RE: psmatch2


From   "Millimet, Daniel" <millimet@mail.smu.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: psmatch2
Date   Tue, 9 Aug 2005 06:34:11 -0500

It doesn't make sense, timing-wise, that the treatment affects the outcome and the outcome affects the probability of treatment.  Perhaps what you envision is that pre-treatment unemployment duration affects the prob. of treatment, and then the treatment potentially affects post-treatment unemployment duration.  Thus, you need to split unemployment duration into 2 variables - pre and post-treatment - where the former enters the model for the propensity score and the latter is the outcome of interest.

Dann



****************************************************
Daniel L. Millimet, Associate Professor
Department of Economics
Box 0496
SMU
Dallas, TX USA
phone: 214.768.3269
fax: 214.768.1821
web: http://faculty.smu.edu/millimet
****************************************************
-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Patricia Vera Rojas
Sent: Tuesday, August 09, 2005 1:24 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: psmatch2

Hi,

I am using psmatch2 in order to evaluate the impact of a
job assistance program in the unemployment duration of
participants.

Can the outcome variable be also included both in the
logit/probit and in the regression using psmatch2?
(the outcome variable is unemployment duration and it also
determines the probability of participating in the program)
Thanks,

Patricia



	
	
		
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