[R] expected risk from coxph (survival)

From: Reid Tingley <r_tingley_at_hotmail.com>
Date: Sat, 07 Jun 2008 03:25:55 -0300

Hello,  

When I try to to obtain the expected risk for a new dataset using coxph in the survival package I get an error. Using the example from ?coxph:  

> test1 <- list(time= c(4, 3,1,1,2,2,3),+ status=c(1,NA,1,0,1,1,0),+ x= c(0, 2,1,1,1,0,0),+ sex= c(0, 0,0,0,1,1,1))> cox<-coxph( Surv(time, status) ~ x + strata(sex), test1) #stratified model> > new<-list(time= c(5, 1,1,2,2,4,3),+ status=c(1,NA,1,0,0,1,1),+ x= c(0, 2,1,1,1,0,0),+ sex= c(0, 0,0,0,1,1,1))> > predict(cox,new,type="expected")Error in predict.coxph(cox, new, type = "expected") : Method not yet finished
 

I assume that this is something that has simply not yet been incorporated into the survival package. Does anyone know of a way to calculate the expected risk for a new data set? Is this even possible? I would appreciate any help that you could give me.  

Cheers,
Reid      


        [[alternative HTML version deleted]]



R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sat 07 Jun 2008 - 06:29:36 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sat 07 Jun 2008 - 08:30:42 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive