prentice: Veteran's Administration Lung Cancer Trial

In SMIR: Companion to Statistical Modelling in R

Description

The file consists of survival times in days of 137 lung cancer patients from a Veteran's Administration Lung Cancer trial, together with explanatory variables: performance status, a measure of general medical status on a continuous scale 1–9.9, with 1–3 completely hospitalized, 4–6 partial confinement to hospital, 7–9.9 able to care for self; age in years; time in months from diagnosis to starting on the study; a factor prior therapy (1 no, 2 yes); a factor treatment (1 standard, 2 test) and a factor tumour type (1 squamous, 2 small, 3 adeno, 4 large). There are three censored observations.

Usage

data(prentice)

Format

A data.frame of 137 obs. of 8 variables:

[,1]	treat	integer, 1= standard, 2= test
[,2]	type	integer, 1= squamous, 2 =small, 3= adeno, 4= large
[,3]	time	integer, survival time in days
[,4]	censor	integer, censoring indicator
[,5]	status	integer, general medical status on a scale 1--9.9
[,6]	mfd	integer, time in months from diagnosis
[,7]	age	integer, age in years
[,8]	prior	integer, prior therapy 1=no, 2=yes

Note

See p.414 in SMIR

Source

Prentice, R. L. (1973), "Exponential survivals with censoring and explanatory variables", Biometrika, 60, 279–88.

SMIR documentation built on May 29, 2017, 10:39 a.m.