In a cohort study of 1,000 people who were at-risk of the ou…

In a cohort study of 1,000 people who were at-risk of the outcome at baseline, 150 developed a new occurrence over a 10 year period. Assume that there were no losses to follow-up and no competing risks. Also, assume that you know whether individuals developed the outcome of interest and when those outcomes occurred during the study. Which of the following can be calculated?