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| From | Anastasiya Zavyalova <anastasiya.zavyalova@rice.edu> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | st: xtnbreg, fe does not converge when xtpoisson does |
| Date | Tue, 21 Aug 2012 13:08:00 -0500 |
I have a dependent count variable. The range is from 0 to 800,000. When I run an xtpoisson with fixed effects it runs well and, in fact, all my coefficients are highly signifiant. However, when I run an xtnbreg with a fixed-effects option (turns out the variable is over-dispersed), I receive the following error message: "discontinuous region encountered; cannot compute an improvement; r(430);" What could be the reason? Thank you. * * 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/