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st: R: test overdispersion xtpoisson


From   "Carlo Lazzaro" <carlo.lazzaro@tin.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: R: test overdispersion xtpoisson
Date   Sat, 3 Oct 2009 08:33:04 +0200

Dear Andrea,
In Stata 9/2 SE, but I would assume the name of the following did not change
in Stata 10 and 11, please see - help j_chibar -.

Kind Regards,
Carlo
-----Messaggio originale-----
Da: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di Andrea Rispoli
Inviato: sabato 3 ottobre 2009 2.06
A: statalist@hsphsun2.harvard.edu
Oggetto: st: test overdispersion xtpoisson

Dear Statalisters,
I have to choose between an xtpoisson model and an xtnbreg model. I
would like to ask how could I perform a test for overdispersion with
Stata (for instance the Cameron and Trivedi test),

Thank you very much!
Kind Regards,
AR
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