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st: helped with fixed effects logit


From   Michael Horowitz <horowitz@fas.harvard.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: helped with fixed effects logit
Date   Tue, 7 Mar 2006 13:42:37 -0500 (EST)

To whom it may concern:

I have a paper where I am examining the impact of democracy on crisis
behavior.  I need to estimate a fixed effects or conditional logit model
but I am not sure how.

The data is set up dyadically, meaning each observation has data on the
crisis and data for state A in the crisis and state B in the crisis

Here is the functional form of the logistic regression I have run

logit DV democstateA democstateB control1 control2 control3 control4

I need to estimate a fixed effects model to control for the impact of
specific countries.  I know that I need to use conditional logit to
control for unmeasured heterogeneity.

But I am not sure how to do it.  Specifically, in the clogit setup, it
should look like:

clogit DV democstateA democstateB control1 control2 control3 control4,
group(????).

What I am unclear about is what goes in the parentheses.  If anyone could
assist, I would very much appreciate it.  I apologize for asking such a
basic question.

Regards,
Michael Horowitz
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