How does disease incidence differ from disease prevalence? Group of answer choices E. All answers are correct D. Incidence is measured prospectively, prevalence is measured retrospectively. B. Incidence depends upon diagnostic accuracy, prevalence does not. F. None of the answers are correct. C. Incidence measures therapeutic effects, prevalence does not. A. Incidence is the frequency of new cases, prevalence is the frequency of existing cases.

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