Class for a dataset of survival data.
groupsThe group numbers.
stagesThe stage numbers.
overallEventsThe overall events.
overallAllocationRatiosThe overall 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.