The frequency or number of events that occur over a defined time period, divided by the average size of the population at risk, is known as what?
A) A cross-sectional survey
B) A case-control study
C) An incidence rate
D) A prospective cohort study

Question

Quizplus · Accepted Answer

The described calculation is that of an incidence rate, which provides information on the number of new cases of a disease or health condition that occur within a specific time period relative to the size of the population at risk. A cross-sectional survey involves collecting data at a single point in time and does not necessarily involve a population at risk. A case-control study compares groups with and without a certain outcome or exposure, and does not provide information on incidence rates. A prospective cohort study follows a group over time to assess changes in health outcomes and exposure, but is not directly related to the calculation described.

The Frequency or Number of Events That Occur Over a Defined