frei: Acute Leukemia data from Freireich et al (1963).

Description Usage Format Details Source References Examples

Description

In this study there were 21 pairs of subjects, and within each pair one subject received 6-mercaptopurine (6-MP) and one got placebo. The data are right censored.

Usage

1

Format

A data frame with 42 observations on the following variables.

time

time in remission (in weeks)

status

event status, 1 is relapse, 0 is censored

treatment

treatment group: either 'placebo' or '6-MP'

pair

pair id number

Details

See also Gehan (1965) who used the data ignoring the pairing so that he could illustrate his famous two-sample (non-paired) rank test.

Source

bpcp package

References

Gehan (1965) Biometrika 52:203-223. Freireich et al (1963) Blood 21(6):699-716.

Examples

1

lbraglia/lbdatasets documentation built on Feb. 19, 2022, 10:40 p.m.