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st: Interactions term in xtlogit model.

From   natasha agarwal <>
Subject   st: Interactions term in xtlogit model.
Date   Wed, 12 Oct 2011 11:36:01 +0100

Dear All,

Following Stata tip 87, I estimated the following model

xtlogit expdum lnk lnw lntfp age0 fdi_e lnexportfdi_pure e y14-y18, or
fe        (where fdi_e=lnexportfdi_pure*e and e is a dummy)
margins, over(e) expression(exp(xb())) post

and I get the following result

Predictive margins		Number	of obs   =	7663
Model VCE    : OIM

Expression   : exp(xb())
over         : e

Margin   Std. Err.	z	P>z	[95% Conf.	Interval]
0    (not estimable)
1    (not estimable)
Can someone please help me with the same?

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