survivalG | R Documentation |
Computes G-estimator
\hat S(t,A=a) = n^{-1} ∑_i \hat S(t,A=a,Z_i)
for the Cox model based on phreg og the Fine-Gray model based on the cifreg function. Assumes that the first covariate is $A$ and this is a factor. Gives influence functions of these risk estimates and SE's are based on these.
survivalG(x, data, time = NULL)
x |
phreg or cifreg object |
data |
data frame for risk averaging |
time |
for estimate |
Thomas Scheike
data(bmt); bmt$time <- bmt$time+runif(408)*0.001 bmt$event <- (bmt$cause!=0)*1 dfactor(bmt) <- tcell~tcell fg1 <- cifreg(Event(time,cause)~tcell+platelet+age,bmt,cause=1, cox.prep=TRUE,propodds=NULL) summary(survivalG(fg1,bmt,50)) ss <- phreg(Surv(time,event)~tcell+platelet+age,bmt) summary(survivalG(ss,bmt,50))
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