Community Health HESI Exam Related

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Which of the following measures the frequency of new cases of the phenomenon during a given period of time?

  • A. prevalence rate
  • B. proportionate mortality rate
  • C. case fatality rate
  • D. incidence rate
Correct Answer: D

Rationale: The correct answer is D, incidence rate. Incidence rate measures the frequency of new cases of a phenomenon, providing important information about the risk of developing the condition. Prevalence rate (choice A) reflects both old and new cases, proportionate mortality rate (choice B) is the proportion of deaths due to a specific cause, and case fatality rate (choice C) measures the proportion of deaths among confirmed cases, not just new cases.