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st: logit and mfx
From
"Figueroa Armijos, Maria Augusta (MU-Student)" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: logit and mfx
Date
Mon, 14 Feb 2011 03:38:08 +0000
Hi all,
I have a question about logit and mfx.
I am running a logit model with three variants for the errors. First model is non-robust errors (logit Y X1 X2). Second model is with robust errors (logit Y X1 X2, vce(robust)). Third model is with clustered-robust errors (logit Y X1 X2, vce(cluster
fips)).
When I run mfx after each model, I get the same values of dydx (first differences) for non-robust, robust, and clustered-robust errors. What am I doing wrong? I can't find any answer in previous questions in stata.
Thanks a lot!
Maria
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