[R] Adding factor variable to a CoxPH

[Göran Broström]

On Sat, Oct 09, 2004 at 09:03:23AM +0800, Neil Leonard wrote:
> I think this is a pretty basic statistic question:
> 
> If I have a variable which has 4 factors how can I add it to a coxph 
> model? I have other variables added which have digits 1-4 instead of 
> four factors. If I recode the variable will that work?

?factor
?as.factor

> 
> 
> Thanks
> Neil
> 
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-- 
 Göran Broström                    tel: +46 90 786 5223
 Department of Statistics          fax: +46 90 786 6614
 Umeå University                   http://www.stat.umu.se/egna/gb/
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