Class for a dataset of survival data.
groupsThe group numbers. Is an integer vector of length number of stages times number of groups.
stagesThe stage numbers of the trial. Is an integer vector of length kMax.
overallEventsThe cumulative events.
overallAllocationRatiosThe cumulative allocations ratios.
overallLogRanksThe overall logrank test statistics.
allocationRatiosThe allocation ratios.
logRanksThe logrank test statistics.
This object cannot be created directly; better use getDataset()
with suitable arguments to create a dataset of survival data.