What are the differences between incidence and prevalence in epidemiology?
A. Incidence refers to the number of cases within a small sample; prevalence is the number of cases within a population.
B. Incidence refers to the number of new cases in a population within a certain time; whereas prevalence is the total number of active cases.
C. Incidence consists of the total number of cases in a research study; prevalence is the number of new cases in a study.
D. Incidence is the number of cases in 12 months or less; prevalence describes the number of cases in 12 months or more.
Answer: B. Incidence refers to the number of new cases in a population within a certain time; whereas prevalence is the total number of active cases.
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