pbt01: pbt01 data set from a randomized trial of a control arm vs...

Usage Format Source References Examples

Usage

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data("pbt01")

Format

A data frame with 184 observations on the following 6 variables.

survival

Follow-up time from randomization, in months

died

Indicator of death at the end of follow=up; 0 = alive, 1 = died

treatment

A factor with two levels, "control", "treatment"

progression

Indicator for disease progression; 0 = no progression, 1 = progression

time.to.progression

time from randomization to either disease progresson/death or end of follow-up

cancelled.after.rando

Factor for starting assignment; levels "no", "yes".

cycle.of.resp

Factor for cycle of initial chemotherapy needed for complete response; levels = "cycle.1", "cycle.2".

Source

Data used by permission of the ECOG-ACRIN Coordinating Center

References

Data from the trial reported in Stadtmauer, E.A., O'Neill, A., Goldstein, L.J., Crilley, P.A., Mangan, K.F., Ingle, J.N., Brodsky, I., Martino, S., Lazarus, H.M., Erban, J.K. and Sickles, C., 2000. Conventional-dose chemotherapy compared with high-dose chemotherapy plus autologous hematopoietic stem-cell transplantation for metastatic breast cancer. New England Journal of Medicine, 342(15), pp.1069-1076.

Examples

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library(survival)
data(pbt01)
summary( survfit( Surv(survival, died)~ treatment, data=pbt01))

dave-harrington/eventtimedata documentation built on May 7, 2020, 2 p.m.