At the initial examination in the Framingham study, coronary heart disease was found in 5 per 1000 men ages 30-44, and in 5 per 1000 women ages 30-44. The inference that in this age group men and women have an equal risk of getting coronary heart disease is incorrect because the data are prevalence data and not incidence data.

Question

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Prevalence data shows the proportion of individuals with a condition at a specific time, not the rate of new cases, which is what incidence data would provide to assess risk.

At the Initial Examination in the Framingham Study, Coronary Heart