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Re: st: DiD
From 
 
Steven Samuels <[email protected]> 
To 
 
[email protected] 
Subject 
 
Re: st: DiD 
Date 
 
Tue, 29 Mar 2011 14:33:35 -0400 
Ingrid: 
You cannot do a DID design without a control group.  The "DID" means "Difference in Differences".  So one would compare after-before in the treated and in the control.  In your data set you have only the difference in the treatment group.
Steve
[email protected]
On Mar 29, 2011, at 7:59 AM, inggrid wrote:
 I would like to assess the impact of a program introduced in 2005. I have information on treated households.
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