This function matches variable names in data to those in a ratetable for
survexp
Usage
ratetable(...)
Arguments
...
tags matching dimensions of the ratetable and variables
in the data frame (see example)
Value
A data frame
See Also
survexp,survexp.us,is.ratetable
Examples
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, xscale=365.25) # Add the expected survival line
## End(Not run)