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Re: st: any virtues to stepwise regression?


From   "Svend Juul" <SJ@SOCI.AU.DK>
To   <statalist@hsphsun2.harvard.edu>
Subject   Re: st: any virtues to stepwise regression?
Date   Mon, 8 Aug 2005 10:44:56 +0200

Chris Ryan asked (rethorically?):

Are there *any* circumstances in which stepwise multiple regression
would be the preferred approach?
--------------------------------

I can think of one example:

In the thalidomide disaster an epidemic of rare malformations occurred.
There were no strong, but dozens of weak hypotheses about the etiology.
In such a situation I think an extensive case-control study followed by
a stepwise logistic regression analysis is the most sensible thing to
do.

I can think of no other situations...

Svend


__________________________________________

Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000  Aarhus C, Denmark
Phone: +45 8942 6090
Home:  +45 8693 7796
Email: sj@soci.au.dk
__________________________________________ 

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