S4) Review the survival curve shown for a hypothetical study comparing the effects of two treatments (Treatment A and Treatment B), with survival measured in days a) What is the approximate 500-day cumulative survival for each group? Treatment A: Treatment B: b) What is the approximate median survival time? Treatment A: Treatment B: c) What is the approximate 2-year cumulative survival for each group? Treatment A: Treatment B: d) At what approximate time does cumulative mortality reach 25% for each group? Treatment A: Treatment B: 1.00 Survival probability 0.75- 0.50- 0.25 0.00 0 250 Treatment A Treatment B 500 Time (days) 750 1000

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