Survival data from a clinical trial of lung cancer patients conducted by the Veteran's Administration.
Format
A data frame with 137 observations and 8 variables:
- trt
Treatment group (1 = standard, 2 = test)
- celltype
Cell type (squamous, smallcell, adeno, large)
- time
Survival time (in days)
- status
Censoring status (1 = died, 0 = censored)
- karno
Karnofsky performance score (higher = better)
- diagtime
Months from diagnosis to randomization
- age
Age in years
- prior
Prior therapy (0 = no, 10 = yes)