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Re: st: Binomial regression


From   Ronan Conroy <rconroy@rcsi.ie>
To   "statalist hsphsun2. harvard. edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Binomial regression
Date   Mon, 6 Aug 2007 13:13:26 +0100


On 4 Aug 2007, at 22:21, Richard Goldstein wrote:
I note that others have complained about failure to
converge when using the log link (relative risk
interpretation).  For those cases, there is a solution:
use poisson regression with robust error variance;
see Zou, G (2004), "A Modified Poisson regression
approach to prospective studies with binary data,"
_American Journal of Epidemiology_, 159: 702-706.
What a very useful observation! For those interested, Zou's paper is freely available here

http://aje.oxfordjournals.org/cgi/reprint/159/7/702


P Before printing, think about the environment
=================================
Ronan Conroy
rconroy@rcsi.ie
Royal College of Surgeons in Ireland
120 St Stephen's Green, Dublin 2, Ireland
+353 (0)1 402 2431
+353 (0)87 799 97 95





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