Which is the primary method used to measure the existence of states of health or illness in a population during a given time period?
A) Rate
B) Ratio
C) Relative risk ratio
D) Sensitivity
Ans: A
Feedback:
Rate is the primary measurement used to describe the occurrence (quantity) of a state of health in a specific group of people in a given time period. Ratio is a fraction that represents the relationship between two numbers. Relative risk ratio is the ratio of the incidence rate in the exposed group to the incidence rate in the nonexposed group. Sensitivity is the ability of a test to correctly identify people who have a health problem or the probability of testing positive if the health problem is truly present.
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