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st: not converging


From   Scott Cunningham <scunning@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: not converging
Date   Mon, 24 Oct 2005 21:28:19 -0400

I'm using -xtpoisson-. When I do not include the year effects, it converges fine. When I include the year effects, it fails to converge (-xi: xtpoisson rp age i.year, fe i(id)-). Any ideas why including the year dummies would cause Poisson MLE to have so much trouble? Also, any suggestions?

sc
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