Suppose you are conducting a 5-week observational cohort study including 100 people who are free of disease X at start of study. You are interested in occurrence and timing of disease X.

Construct a life table including columns for time, number of people free of disease X at interval start, number of events in interval, risk of developing disease X in interval, probability of disease X-free survival in interval, and cumulative disease X-free survival. The following numbers of disease X events happen per week:

Week 1: 2 events; Week 2: 3 events; Week 3: 6 events; Week 4: 7 events; Week 5: 9 events