leukwbc {GLMsData}

Leukaemia survival times

Description

The times to death and white blood cell counts for two groups of leukaemia patients

Usage

data(leukwbc)

Format

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

Details

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.

Source

P. Feigl and M. Zelen (1965) Estimation of exponential survival probabilities with concomitant information. Biometrics, 21, 826–838.

References

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.

Examples

data(leukwbc)
summary(leukwbc)