A randomized trial on 488 liver cirrhosis patients
Two data frames with the following variable.
id
patients identifier; in total there are 467 patients.
pro
prothrobin measurements.
time
for data frame prothro
the time points at which the prothrobin measurements were taken;
for data frame prothros
the time to death or censoring.
death
a numeric vector with 0 denoting censoring and 1 death.
treat
randomized treatment; a factor with levels "placebo" and "prednisone".
Andersen, P. K., Borgan, O., Gill, R. D. and Keiding, N. (1993). Statistical Models Based on Counting Processes. New York: Springer.