print.survfitr: Print a Short Summary of a Survival Recurrent Curve

Description

Print number of observations, number of events, the restricted mean survival and its standard error, the median survial and the minimum, maximum and median number of recurrences for each subject.

Usage

"print"(x, scale=1, digits=max(options()$digits - 4, 3), ...)

Arguments

the result of a call to the survfit, psh.fit, wc.fil or mlefrailty.fit functions

scale

a numeric value to rescale the survival time, e.g., if the input data to survfit were in days, scale=365 would scale the printout to years

digits

number of digits to print

...

other unusued arguments

Value

x, with the invisible flag set.The number of observations, the number of events, the restricted mean survival and its standard error, the median survival and the minimum, maximum and median number of recurrences are printed. If there are multiple curves, there is one line of output for each.

Details

The restricted mean and its standard error are based on a truncated estimator. If the last observation(s) is not a death, then the survival curve estimate does not fot to zero and the mean survival time cannot be estimated. Instead, the quantity reported is the mean of survival restricted to the time before the last censoring. When the las censoring time is not random this quantity is occasionally of interest.

The median are defined by drawing a horizontal line at 0.5 on the plot of the survival curve.

Examples

Run this code

data(MMC)
fit<-survfitr(Survr(id,time,event)~group,data=MMC)
print(fit)