bladder {mdhglm}

Bladder Cancer Data

Description

Therneau and Lumley (2015) reported data on recurrences of bladder cancer, which were used to demonstrate methodology for recurrent event modelling (Wei et al., 1989). This is the data set from 85 subjects who were assigned to either thiotepa or placebo, and reports the first four recurrences for any patient. The stop variable is the tumor recurrence or censoring time in month. The event variable is 1 for recurrence and 0 for everything else (including death for any reason).

Usage

data("bladder")

Format

A data frame with 340 observations on the following 7 variables.

id

patients identifier for 85 patients

rx

treatment; 1 (=placebo) and 2 (=thiotepa)

number

initial number of tumours (8=8 or more)

size

size (cm) of largest initial tumour

stop

recurrence or censoring time

event

event variable with 1 for recurrence and 0 for everythis else (including death for any reason)

enum

which recurrence (up to 4)

References

Therneau, T. and Lumley, T. (2015). survival: Survival Analysis. R package version 2.38-3.

Wei, L.J., Lin, D.Y., and Weissfeld, L. (1989). Regression analysis of multivariate incomplete failure time data by modeling marginal distributions. Journal of the Americal Statistical Association, 84, 1065–1073.