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Re: st: Difference-in-differences analysis with binary data (repeated cross-sectional data)


From   Maarten Buis <[email protected]>
To   [email protected]
Subject   Re: st: Difference-in-differences analysis with binary data (repeated cross-sectional data)
Date   Thu, 24 May 2012 13:51:15 +0200

On Thu, May 24, 2012 at 1:19 PM, Armen Martirosyan wrote:
> I am using Stata 12 and doing Difference-in-differences (DiD) analysis
> with repeated cross-sectional data. I have found Stata syntax for DiD
> regression for continuous data but I am not able to find syntax for binary
> data and most of my data are binary. I would appreciate if you can send me
> Stata syntax for binary DiD analysis (repeated cross-sectional) along with
> regression equation and  some background information and examples (if
> available)  which can help me to understand how to deal with binary DiD
> regression.

If you have no additional control variables than you have a fully
saturated model and there is no problem with using the code for
continuous data with the addition of the -vce(robust)- option. See:
<http://www.stata.com/statalist/archive/2012-02/msg00351.html>

If you have additional control variables you need to be a bit more
careful and do some more checking to see if the model is reasonable,
but in many cases I would suspect that the linear probability model
will still be just fine.

Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
--------------------------

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