Dear all,
How can i get brier's score for the bootsrap sample for survival analysis.
this are the code i am using for the validation.
f1 <- cph(Surv(time,dead ) ~ strata(x1)+strata(x2)+strata(x3),
x=TRUE, y=TRUE, surv=TRUE, time.inc=12, data=new)
validate(f1,B=200,u=12,dxy=T)
Thanks
Paaveen
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