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From | Rafal Raciborski <rraciborski@stata.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: clustering and fixed effects poisson |
Date | Fri, 09 Jul 2010 12:41:45 -0500 |
Tatyana Deryugina <tatyanad@mit.edu> asked: > I'm trying to estimate a Poisson model on panel data (county by year), > using fixed effects. I would like to cluster by county, but the > xtpoisson command doesn't seem to allow this. Does anyone know of an > add-on that allows for clustering with fixed effects poisson? Cluster-robust standard errors for fixed-effects -xtpoisson- were added in Stata 11.1. If Tatyana is currently using Stata 11, she can upgrade for free to Stata 11.1 by typing -update all-. -- Rafal rraciborski@stata.com * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/