(Answered) One thousand people are enrolled in a 10 year cohort study

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One thousand people are enrolled in a 10 year cohort study. At the start of the study, 100 have diagnosed CVD. Over the course of the study, 80 people who were free of CVD at baseline develop CVD.

What is the cumulative incidence of CVD over 10 years?
What is the prevalence of CVD at baseline?
What is the prevalence of CVD at 10 years?

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