liver.surv {JSM} | R Documentation |
Prednisone versus Placebo in Liver Cirrhosis Patients - Survival Data
Description
A randomized control trial in which both survival and longitudinal data were collected to examine the development of prothrombin index over time and its relationship with the survival outcome. 488 patients were randomly allocated to prednisone (251) or placebo (237) and followed until death or end of the study. liver.surv
only contains the survival data of the trial, with one row per patient.
Format
A data frame with 488 observations on the following 4 variables.
ID
patient ID, there are 488 patients in total.
Time
survival time, i.e. time to death or censoring.
death
death indicator: 0 denotes censoring; 1 denotes death.
Trt
treatment indicator with two levels:
placebo
andprednisone
.
Source
Andersen, P. K., Borgan O., Gill, R. D. and Kieding, N. (1993) Statistical Models Based on Counting Processes. New York: Springer.
References
Henderson, R., Diggle, P. and Dobson, A. (2002) Identification and efficacy of longitudinal markers for survival. Biostatistics 3, 33–50
See Also
Examples
head(liver.surv)