survfit.survstan | R Documentation |
Computes the predicted survivor function for a phpe model.
## S3 method for class 'survstan'
survfit(formula, newdata = NULL, ...)
formula |
an object of the class survstan |
newdata |
a data frame containing the set of explanatory variables; if NULL, a data.frame with the observed failure times and their corresponding estimated baseline survivals is returned. |
... |
further arguments passed to or from other methods. |
a data.frame containing the estimated survival probabilities.
library(survstan)
library(ggplot2)
data(ipass)
ipass$arm <- as.factor(ipass$arm)
fit <- ypreg(Surv(time, status)~arm, data=ipass, baseline = "weibull")
summary(fit)
newdata <- data.frame(arm=as.factor(0:1))
surv <- survfit(fit, newdata)
ggplot(surv, aes(x=time, y=surv, color = arm)) +
geom_line()
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