Data on 33 leukaemia patients, classified by AG Group (1: AG positive, 2: AG negative). For each patient white blood cell count and survival time (in weeks) is also provided.
A list containing 2 variables with 33 rows, and a variable with 1 row.
Feigl and Zelen, Estimation of exponential survival probabilities with concomitant information, Biometrics, 21, 826-38 (1965).
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