- ID
integer: number for patient identification.
- visit
numeric: measurement times for the repeated blood pressure measurements.
- y
numeric: longitudinal measurements.
- time
numeric: time to event (or censoring).
- event
integer: event indicator. Coded as 0 = right-censoring, and 1 = event.
- X1
integer: time-independent binary explanatory variable.
- X2
numeric: time-independent continuous explanatory variable.