Hi,
I am trying to calculate the actual number of death in 2 groups
(treatment and intervention) with a 6 year cumulative survival of 41
and 49% based on the Kaplan Meier survival curve (unadjusted). I know
the number of patients at risk in the 2 groups (291 and 67 pts). Is
the number of deaths in the group the percentage of survivors times
the number at risk (i.e, 172 and 34). I feel that its not a simple
calculation given that at each time period the number of patients at
risk varies. Please help.
thanks,
Sripal.
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