[R] Forward stepwise LOGISTIC regression
Prof Brian Ripley
ripley at stats.ox.ac.uk
Tue Dec 16 16:01:00 CET 2003
On Tue, 16 Dec 2003, Karl Knoblick wrote:
> Does anybody know how to do a forward stepwise
> LOGISTIC regression?
>
> (I found lrm(), fastbw() and validate() in the Design
> package concerning backward logistic regression - but
> no forward)
Try using R itself: glm + step.
help.search("logistic")
help.search("stepwise")
found both of those, so how come *you* failed to?
I'll not comment on how bad an idea this would be, as maybe you just wish
to illustrate that.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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