11) The figure below shows the follow-up time for five patients with asthma who were enrolled in the study outlined in Part 1. Based on the figure, calculate the person-years that each person contributes and the total person-years contributed by the five persons in the five years of follow-up.

Administrative Censoring I l Person 1 I Pneumonia Hospitalization I I Person 2 I I I Person 3 | Loss to follow-up | I Person 4 : Pneumonia Hospitalization I I Person 5 I I I I 1 2 3 4 5 Years After Enrollment