leukwbc | R Documentation |
The times to death and white blood cell counts for two groups of leukaemia patients
data(leukwbc)
A data frame with 33 observations on the following 3 variables.
WBC
the white blood cell count; a numeric vector
Time
the time to death in weeks; a numeric vector
AG
the morphological variable, the ag factor;
a numeric vector where 1
means ag-positive and
2
means ag-negative
The data gives the times to death (in weeks) and white blood cell counts for two groups of leukaemia patients, ag-positive and ag-negative. The two groups have not been created by random allocation.
P. Feigl and M. Zelen (1965) Estimation of exponential survival probabilities with concomitant information. Biometrics, 21, 826–838.
D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994) A Handbook of Small Data Sets, London: Chapman and Hall. Dataset 424.
data(leukwbc) summary(leukwbc)
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