In the AIDS data, survival data can be summarized for each of patients. Times to death were also recorded with 40 percent of censoring rate.
data("aids.id")
A data frame with 467 observations on the following 12 variables.
patient
patients identifier for 467 patients
Time
time to death or censoring
death
status with 0 denoting censoring and 1 death for patient
CD4
CD4 cells count
obstime
time points at which the CD4 cells count was recorded
drug
a factor with levels ddC
(zalcitabine) and ddI
(didanosine)
gender
a factor with levels female
and male
prevOI
a factor with levels noAIDS
(previous opportunistic infection at study entry) and AIDS
(no previous infection)
AZT
a factor with levels intolerance
(AZT intolerance) and failure
(AZT failure)
start
start of time in the first interval
stop
end of time in the first interval
event
status with 0 denoting censoring and 1 death in the first interval
Rizopoulos, D. (2015). JM: Joint Modeling of Longitudinal and Survival Data. R package version 1.4-2.