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st: RES: RE: RES: RE: Poisson Regression


From   José Maria Pacheco de Souza <jmpsouza@usp.br>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RES: RE: RES: RE: Poisson Regression
Date   Mon, 14 Feb 2011 20:42:59 -0200

Paul,
Good point. I will visit again yours references.
As far your observation about using -binreg-, I gave up, because of non
convergence. With -poisson- I didn´t have convergence problems, but sometime
probability estimate greater than 1.
Regards, 
José maria 

José Maria Pacheco de Souza 
Professor Titular, aposentado; Colaborador Sênior
Departamento de Epidemiologia/Faculdade de Saúde Pública/Universidade de São
Paulo
Av. Dr. Arnaldo, 715 - São Paulo, Capital - cep 01246-904
Fones: FSP= (11)3061-7747  Res= (11)3714-2403; (11)3768-8612
www.fsp.usp.br/~jmpsouza


-----Mensagem original-----
De: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Em nome de Visintainer, Paul
Enviada em: segunda-feira, 14 de fevereiro de 2011 19:02
Para: 'statalist@hsphsun2.harvard.edu'
Assunto: st: RE: RES: RE: Poisson Regression

Jose,

The McNutt articles (in my previous reply) suggest that the conversion
method can produce biased point estimates and confidence intervals that are
too narrow, particularly in multivariable settings.  Note that in his help
file on -oddsrisk-, Hilbe uses Poisson regression with the robust standard
errors as a comparison for the output of his -oddsrisk- program.

-p

________________________________________________
Paul F. Visintainer, PhD
Baystate Medical Center
Springfield, MA 01199




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