Re: st: Stepwise (m)logit

["E. Paul Wileyto" <epw@mail.med.upenn.edu>]

Look up "stepwise" in the reference manuals.  You control this with the 
proper use of parentheses, and the option "lockterm1"

Put the X terms you want to keep first, and enclose the group in 
parens.  Add "lockterm1" to the options, and stepwise will keep 
everything in that first set of parens.

Paul

Hendri Adriaens wrote:

> Hello,
>
> Is it possible to do a stepwise logit where we can state a set of variables
> that should always be included and not dropped? -stepwise- doesn't have an
> option for that it seems, but maybe there is another command that does have
> this?
>
> And is it possible to do a stepwise multinomial logit?
>
> Thanks already, best regards,
> -Hendri Adriaens.
>
> ---------------------------------------- 
> Hendri Adriaens 
> Researcher CentERdata 
> Tilburg University 
> Room K638 
> Postal address:   PO Box 90153, 5000 LE
> Visiting address: Warandelaan 2, 5037 AB 
> Tilburg, The Netherlands 
> Tel.: +31-13-466 3263 / 8325
> Fax.: +31-13-466 2764 
> E-mail: hendri@uvt.nl
> WWW: http://www.centerdata.nl
>
>
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--
E. Paul Wileyto, Ph.D.
Assistant Professor of Biostatistics
Tobacco Use Research Center
School of Medicine, U. of Pennsylvania
3535 Market Street, Suite 4100
Philadelphia, PA  19104-3309

215-746-7147
Fax: 215-746-7140
epw@mail.med.upenn.edu
http://mail.med.upenn.edu/~epw/ 
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