bladderTP {TPmsm}

Bladder cancer recurrences

Description

This contains the bladder cancer recurrences data in a different format. In this study, patients had superficial bladder tumors that were removed by transurethral resection. Many patients had multiple recurrences (up to a maximum of 9) of tumors during the study, and new tumors were removed at each visit. Only the first two recurrence times (in months) are considered.

Usage

data(bladderTP)

Format

A data frame with 85 observations on the following 4 variables.

time1

Time until first recurrence/censoring time.

event1

First recurrence indicator.

Stime

Time until second recurrence/censoring time, i.e. the total time of the process.

event

First or second recurrence indicator, i.e. the censoring indicator of the total time.

References

Wei L. J., Lin D. Y., Weissfeld L. (1989). Regression analysis of multivariate incomplete failure time data by modeling marginal distributions. Journal of the American Statistical Association, 84(408), 1065-1073. doi:10.2307/2290084