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st: Re: examples propensity score matching


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: examples propensity score matching
Date   Tue, 28 Oct 2008 19:54:46 +0100

The line for the server to eat...

http://www.stata-journal.com/article.html?article=st0026



HTH
Martin
_______________________
----- Original Message ----- From: "Ana Gabriela Guerrero Serdan" <ag_guerreroserdan@yahoo.com>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, October 28, 2008 7:08 PM
Subject: st: examples propensity score matching


Dear Stata users,

A very basic question. I want to take a look at how to do a propensity score matching in stata (commands psmatch2, pscore, I think).

I have two cross sectional surveys (t1, t2) where I observe treatment and control individuals in the second period but I cant know the conterfactual in t1. I want to use propensity score matching to indivudals in t2 to individuals in t1 based on some observable characteristics.

I have technical readings and literature but I would like to know the how to in Stata. how the data should look? should I pool individuals for both cross-sections?

thanks,
Gaby



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