md.censor {missDeaths}

Censoring simulated survival data

Description

The md.censor function takes the data set simulated by the md.simulate and transforms it into a right censored sample by adding two columns to the original data set:
- time specifies the time to event or censoring, whichever comes first, specified in days and
- status specifies the censoring indicator and equals 0 if the individual is censored or <>0 in case of event.

Usage

md.censor(data, start, end, eventcolumns)

Arguments

data

data.frame containig event times and covariates

start

column name specifying start dates (left censoring)

end

column name specifying end dates (right censoring)

eventcolumns

vector of column names specifying a single event time or multiple event times (in case of competing risks)

Value

data.frame containing original data and columns time, maxtime and status

Examples

## Not run: 
library(missDeaths)

sim = md.simparams() +
  md.sex("sex", 0.5) + 
    md.uniform("birth", as.Date("1915-1-1"), as.Date("1930-1-1")) +
      md.uniform("start", as.Date("2000-1-1"), as.Date("2005-1-1")) +
        md.death("death", survexp.us, "sex", "birth", "start") +
          md.eval("age", "as.numeric(start - birth)/365.2425", 80, FALSE) + 
            md.exp("event", "start", c("age", "sex"), c(0.1, 2), 0.05/365.2425)
            
data = md.simulate(sim, 1000)
complete = md.censor(data, "start", as.Date("2010-1-1"), c("event", "death"))

## End(Not run)