VA {MASS} | R Documentation

## Veteran's Administration Lung Cancer Trial

### Description

Veteran's Administration lung cancer trial from Kalbfleisch & Prentice.

### Usage

    VA

### Format

A data frame with columns:

`stime`
  survival or follow-up time in days.
`status`
  dead or censored.
`treat`
  treatment: standard or test.
`age`
  patient's age in years.
`Karn`
  Karnofsky score of patient's performance on a scale of 0 to 100.
`diag.time`
  times since diagnosis in months at entry to trial.
`cell`
  one of four cell types.
`prior`
  prior therapy?

### Source

Kalbfleisch, J.D. and Prentice R.L. (1980) The Statistical Analysis of Failure Time Data. Wiley.

### References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

[Package MASS version 7.2-49 Index]