Statalisters,
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
http://www.stata.com/support/faqs/stat/panel.html
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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