Randomised trial of two treatment regimens for lung cancer. This is a standard survival analysis data set.
veteran
data(cancer, package="survival")| trt: | 1=standard 2=test | 
| celltype: | 1=squamous, 2=smallcell, 3=adeno, 4=large | 
| time: | survival time | 
| status: | censoring status | 
| karno: | Karnofsky performance score (100=good) | 
| diagtime: | months from diagnosis to randomisation | 
| age: | in years | 
| prior: | prior therapy 0=no, 10=yes |