Veteran's Administration lung cancer trial from Kalbfleisch & Prentice.
A data frame with columns:
survival or follow-up time in days.
dead or censored.
treatment: standard or test.
patient's age in years.
Karnofsky score of patient's performance on a scale of 0 to 100.
times since diagnosis in months at entry to trial.
one of four cell types.
Kalbfleisch, J.D. and Prentice R.L. (1980) The Statistical Analysis of Failure Time Data. Wiley.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
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