TestSurvRec (version 1.2.1)

TBCplapyr: Data of tumor recurrence in patients with bladder cancer. Patiens were treated with placebo and 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 piridoxine (31 patients). Data type data.frame with 222 observations on 8 variables.

Usage

data(TBCplapyr)

Format

This data.frame contains the following columns: 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. event : censoring status. '1' = ocurrence of the event in the unit and '0' right censored time. strata : Number of strata trt : Factor w/ 2 levels "Placebo","Pyridoxine" group : a factor with levels. Group identificator.

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

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).

References

Martnez C., Ramrez, G., Vsquez M.( 2009).Pruebas no paramtricas para comparar curvas de supervivencia de dos grupos que experimentan eventos recurrentes. Propuestas. Revista Ingeniera U.C.,Vol 16, 3, 45-55. Martnez, C. (2009). Generalizacin de algunas pruebas clsicas de comparacin de curvas de supervivencia al caso de eventos de naturaleza recurrente. Tesis doctoral. Universidad Central de Venezuela (UCV). Caracas-Venezuela. Pea E., Strawderman R., Hollander, M. (2001). Nonparametric Estimation with Recurrent Event Data. J.A.S.A. 96, 1299-1315.

Examples

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