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st: RE: Transforming regressors prior to estimation in count models


From   "Carter Ivan Rees" <CRees1@uwyo.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Transforming regressors prior to estimation in count models
Date   Tue, 7 Jun 2005 14:23:37 -0600

Bob,

Was their model also a count model or did they transform to meet the
normality assumption of OLS?

Carter

-----Original Message-----
From: Rkaminski@aol.com [mailto:Rkaminski@aol.com] 
Sent: Tuesday, June 07, 2005 1:44 PM
To: statalist@hsphsun2.harvard.edu
Subject: st: Transforming regressors prior to estimation in count models

Dear All,

I'm about to embark on an  analysis using count models to replicate a
study 
in which the authors log  transformed or used some other transformation
on 
their regressors prior to  estimating their models. I was under the
impression 
that typically one begins  with untransformed variables in count models,
assess 
the fit, and then -- if  necessary -- transforms regressors. 

Any thoughts on these  approaches?

Thanks in advance.

Bob Kaminski

Department of  Criminology and Criminal Justice
Currell College
University of South  Carolina
kaminskb@gwm.sc.edu
(803) 777-1560  

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