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From | Maarten buis <maartenbuis@yahoo.co.uk> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: How is confidence interval calculated in weighted GLM in Stata? |
Date | Fri, 30 Apr 2010 05:02:20 -0700 (PDT) |
--- On Fri, 30/4/10, Tan, Ji (GRS, Wuhan) wrote: > Say in a simple Poisson regression, EYi= i=Oi*exp() > Log likelihood function is So And Fisher Score > algorithm gives: This is in line with Stata. > > However, in the weighted case, log likelihood > function changes to , , > I find Stata does not follow this numerically. So > would anyone kindly explain this to me? You can only sent plain text and no attachments to the statalist, so your message got hopelessly garbled. So I can't answer you question directly, I can only give you some literature recomendations: James W. Hardin and Joseph M. Hilbe "Generalized Linear Models and Extensions, second edition. College Station, TX: Stata Press. <http://www.stata-press.com/books/glmext.html> Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/