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lnew
2011 Jun 24
1
UnoC function in survAUC for censoring-adjusted C-index
...mit of the time range under consideration (we want to avoid using the right-end tail of the KM curve).
Copying from the example in the help file:
TR <- ovarian[1:16,]
TE <- ovarian[17:26,]
train.fit <- coxph(Surv(futime, fustat) ~ age,x=TRUE, y=TRUE, method="breslow", data=TR)
lpnew <- predict(train.fit, newdata=TE)
Surv.rsp <- Surv(TR$futime, TR$fustat)
Surv.rsp.new <- Surv(TE$futime, TE$fustat)
If time is left NULL, the maximum futime in the TE data is assumed:
UnoC(Surv.rsp, Surv.rsp.new, lpnew, time=NULL)
#same as
UnoC(Surv.rsp, Surv.rsp.new, lpnew...