Age cut of survival data

Source: R/age.window.R

For a given age interval, each spell is cut to fit into the given age interval.

age.window(dat, window, surv = c("enter", "exit", "event"))

Arguments

dat

Input data frame. Must contain survival data.
window

Vector of length two; the age interval.
surv

Vector of length three giving the names of the central variables in 'dat'.

Value

A data frame of the same form as the input data frame, but 'cut' as desired. Intervals exceeding window[2] will be given event = 0. If the selection gives an empty result, NULL is returned, with no warning.

Details

The window must be in the order (begin, end)

See also

cal.window, coxreg, aftreg

Author

Göran Broström

Examples


dat <- data.frame(enter = 0, exit = 5.731, event = 1, x = 2)
window <- c(2, 5.3)
dat.trim <- age.window(dat, window)