already hypertensive. The remaining 950 are tracked over the span of five years, during which time 64 additional men develop hypertension. (Assume there is no loss to follow-up or death due to competing risks).

Determine the prevalence of hypertension at the beginning of the study.

Calculate the five-year incidence proportion (risk) of hypertension.

Calculate the incidence rate of hypertension in the cohort with and without an actuarial adjustment. Did the actuarial adjustment make a difference? Explain your answer.