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From | Jianhong Chen <jianhongchen1985@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: negative binomial model in stata |
Date | Wed, 2 Nov 2011 13:04:05 -0400 |
Hi, everyone I am dealing with longtitudinal panel data using negative binomial model. I think random effect would fit. Therefore, I use the following command: xtnbreg DV IV controls, re. However, I read another paper which says that " xtnbreg is supposed to estimate random and fixed effects negative binomial models, but I don’t recommend either. Both of these models have a very peculiar parameterization that does not do what it is supposed to do" and this paper recommends use one of the following commands: nbreg DV IV controls year, cluster(Id) xtgee DV IV controls year, family(nb) corr(sta4) robust What do you think is the best way to go? Thank you very much. Best, Jianhong * * 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/