95
Kaplan-Meier Estimates
•With
more precisely measured individual data
–The time intervals are defined by unique observation
times
–The
data are presented for each year as
• Nj: Number of subjects at risk at start of
interval
• Dj: Number of events at end of interval
•(Note
no censoring or events during interval by definition)
•(Note
also that for ties, censoring occurs after deaths)