R: Create cohort life table

lifetab {KMsurv} | R Documentation

## Create cohort life table

### Description

Create cohort life table.

### Usage

    lifetab(tis, ninit, nlost, nevent)

### Arguments

`tis` | a vector of end points of time intervals, whose length is 1 greater than nlost and nevent.
`ninit` | the number of subjects initially entering the study.
`nlost` | a vector of the number of individuals lost follow or withdrawn alive for whatever reason.
`nevent` | a vector of the number of individuals who experienced the event

### Value

A data.frame with the following columns:

`nsubs` | the number of subject entering the intervals who have not experienced the event.
`nlost` | the number of individuals lost follow or withdrawn alive for whatever reason.
`nrisk` | the estimated number of individuals at risk of experiencing the event.
`nevent` | the number of individuals who experienced the event.
`surv` | the estimated survival function at the start of the intervals.
`pdf` | the estimated probability density function at the midpoint of the intervals.
`hazard` | the estimated hazard rate at the midpoint of the intervals.
`se.surv` | the estimated standard deviation of survival at the beginning of the intervals.
`se.pdf` | the estimated standard deviation of the prbability density function at the midpoint of the intervals.
`se.hazard` | the estimated standard deviation of the hazard function at the midpoint of the intervals

The row.names are the intervals.

### Author(s)

Jun Yan jyan@stat.uconn.edu

### Examples

    tis <- c(0, 2, 3, 5, 7, 11, 17, 25, 37, 53, NA)
    nsubs <- c(927, 848, 774, 649, 565, 449, 296, 186, 112, 27)
    nlost <- c(2, 3, 6, 9, 7, 5, 3, rep(0, 3))
    nevent <- c(77, 71, 119, 75, 109, 148, 107, 74, 85, 27)

    lifetab(tis, nsubs[1], nlost, nevent)

[Package KMsurv version 0.1-5 Index]