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st: Comparing treatment effects across years


From   Meryle Weinstein <[email protected]>
To   [email protected]
Subject   st: Comparing treatment effects across years
Date   Sun, 18 Dec 2005 10:25:52 -0500

I'm estimating the same model over several years (regress y x1 x2 x3, 
if year == 2001) with the only change for the equations being the if 
year == statement.  I then generate a treateffect = for eachyear and  
want to compare whether or not the predicted treatment effect in each 
of the years equivalent across each of the years.  

I'm new to STATA and having difficulty figuring out the syntax to do 
this.  Any help is appreciated.

Meryle Weinstein
Research Scientist
Institute for Education and Social Policy
Steinhardt School of Education
New York University
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