R help - Feb 2008 - fastbw() in Design works for continuous variable?

Hi, it seems that the fastbw() in the Design package
only works with variable of class "factor" according
to the help page if I understand correctly. Is there
any R function/package that do stepwise variable
selection for a Cox model with continuous independent
variables?

Thank you

John


     
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array chip wrote:
> Hi, it seems that the fastbw() in the Design package
> only works with variable of class "factor" according
> to the help page if I understand correctly. Is there
> any R function/package that do stepwise variable
> selection for a Cox model with continuous independent
> variables?
Yes it works.  "Factor" was not a good choice of words in the
documentation.

Frank
> 
> Thank you
> 
> John
> 
> 
>      
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-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University