| ratetable {survival} | R Documentation |
This function matches variable names in data to those in a ratetable for
survexp
ratetable(...)
... |
tags matching dimensions of the ratetable and variables in the data frame (see example) |
A data frame
survexp,survexp.us,is.ratetable
fit <- survfit(Surv(time, status) ~ sex, pbc,subset=1:312)
# The data set does not have entry date, use the midpoint of the study
efit <- survexp(~ ratetable(sex=sex,age=age*365.35,year=as.Date('1979/1/1')) +
sex, data=pbc, times=(0:24)*182)
## Not run:
plot(fit, mark.time=F, xscale=365.25, xlab="Years post diagnosis",
ylab="Survival")
lines(efit, col=2) # Add the expected survival line
## End(Not run)