surv_cp: Create counting process data

In raredd/rawr: rawr miscellaneous

Create counting process data

Description

Converts a data frame to counting process notation and allows for time-dependent variables to be introduced.

Usage

surv_cp(
  data,
  time.var,
  status.var,
  covars = setdiff(names(data), c(time.var, status.var))
)

Arguments

data	data frame with survival time, survival status, and other covariates
time.var	data variable name representing survival time
status.var	data variable name representing status
covars	other covariates to retain

Value

A data frame with events in counting process notation.

References

http://www.ddiez.com/teac/surv/

Examples

library('survival')
cp <- surv_cp(aml, 'time', 'status')
coxph(Surv(start, stop, status) ~ x, data = cp)

## compare to
coxph(Surv(time, status) ~ x, data = aml)

raredd/rawr documentation built on March 4, 2024, 1:36 a.m.