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st: heteroskedasticity and xtnbreg

From   [email protected]
To   [email protected]
Subject   st: heteroskedasticity and xtnbreg
Date   Wed, 8 Oct 2003 13:43:46 -0500

I have panel data and use Stata 7.  I am trying to figure out how to test 
for (and if necessary correct for) heteroskedasticity in the context of 
negative binomial regression (xtnbreg).  The interesting FAQ at

covers how one might test for hetero in the context of xtgls, but I have 
not found a comparable discussion for xtnbreg or similar programs.  I 
would greatly appreciate any suggestions.  Thanks.  

W. David Allen
University of Alabama in Huntsville
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