R Graphical Manual

Last data update: 2014.03.03

R: Veterans' Administration Lung Cancer study

veteran

R Documentation

Veterans' Administration Lung Cancer study

Randomised trial of two treatment regimens for lung cancer.

data(veteran)

time	survival time
status	censoring status
trt	0=standard 1=test
celltype	1=squamous, 2=smallcell, 3=adeno, 4=large.
karno	Karnofsky performance score. minimum 10 and maximum 99 in original scale.
diagtime	months from diagnosis to randomisation. minimum 1 and maximum 87 in original scale.
age	in years. minimum 34 and maximum 81 in original scale.
prior	prior therapy 0=no, 1=yes.

All the variables, except for the response, have been sacled to [0,1] interval. To transform back to the original scale, use the formula:

x=min+(max-min)*z.

Kalbfleisch, J. and Prentice, R.L. (2002), The Statistical Analysis of Failure Time Data (Second Edition) Wiley: New Jersey.