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Test Performance in a Population as Prevalence Changes

Purpose:

Purpose: To determine the effect of prevalence in a population on a test's performance.

Specialty:

General content (available to all)

Objective:

other testing

ICD-10:

Description:

How well a test with a given sensitivity and specificity identifies affected and unaffected persons is affected by the prevalence of disease in the population being studied. This approach assumes that the sensitivity and specificity for the test are constant.

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