R: Ratetable reference in formula

ratetable {survival} | R Documentation

## Ratetable reference in formula

### Description

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)
    if (require(date)){
    tdata <- data.frame(agedays=pbc$age*365.24, sex=pbc$sex +1,
                        year= rep(mdy.date(1,1,1976), nrow(pbc)))
    tdata<-tdata[1:312,] ## only the randomised people, with no missing data

    efit <- survexp(~ sex+ratetable(sex=sex,age=agedays,year=year), data=tdata, ratetable=survexp.us, times=(0:24)*182)
    }

[Package survival version 2.34 Index]