TBCplapyr {newTestSurvRec}

Data in patients with bladder cancer treated with placebo or pyridoxine

Description

This database corresponds to the time of recurrence of tumors in 78 patients with bladder cancer. Patients were randomly assigned to treatments: placebo (47 patients) and pyridoxine (31 patients). Data type data.frame with 222 observations on 8 variables.

Usage

data(TBCplapyr)

Format

A data frame with 222 observations on the following 9 variables.

j

Observation number

id

ID of each unit. Repeated for each recurrence

Tinicio

Inicial time

time

recurrence o censoring time. For each unit the last time is censored

Tcal

Time if observation for each unit

event

censoring status. 1 = occurrence of the event in the unit and 0 right censored time

strata

Number of strata

trt

a factor with levels Placebo or Pyridoxine

group

A factor with levels. Group identification

Details

Experiment Byar(1980). The database Byar experiment is used and the time (months) of recurrence of tumors in 116 sick patients with superficial bladder cancer is measured. These patients were randomly allocated to the following treatments: placebo (47 patients), pyridoxine (31 patients) and thiotepa (38 patients).

Source

Andrews D. , Herzberg A., (1985). Data. A collections of problems from many fields for the student and reserarch worker, Springer series in statistics, Springer-Verlag, USA

References

Martinez C., Ramirez, G., Vasquez M. (2009).Pruebas no parametricas para comparar curvas de supervivencia de dos grupos que experimentan eventos recurrentes. Propuestas. Revista Ingenieria U.C.,Vol 16, 3, 45-55.// Martinez, C. (2009). Generalizacion de algunas pruebas clasicas de comparacion de curvas de supervivencia al caso de eventos de naturaleza recurrente. Tesis doctoral. Universidad Central de Venezuela (UCV). Caracas-Venezuela.// Pena E., Strawderman R., Hollander M. (2001). Nonparametric Estimation with Recurrent Event Data. J.A.S.A. 96, 1299-1315.

Examples

XL<-data(TBCplapyr)
XL<-data(TBCplapyr)
print(XL)
Print.Summary(TBCplapyr)