Re: [R] Coxph with factors

From: Dieter Menne <dieter.menne_at_menne-biomed.de>
Date: Fri 15 Jul 2005 - 01:36:20 EST

Kylie-Anne Richards <kar <at> itga.com.au> writes:

>
> I am fitting a coxph model with factors. I am running into problems when
> using 'survfit'. I am unsure how R is treating the factors when I fit, say:
> > DATA<-data.frame(time.sec,done,f.pom=factor(f.pom),po,vo)
> > final<-coxph(Surv(time.sec,done)~f.pom*vo+po,data=DATA)
> > final.surv<-survfit((final), individual=T,conf.type="log-log")
> > print(final.surv)
....

Better chances to get a reply when you tell us what problems you are running into.

Dieter Menne



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