variability in test performance

What is the Impact of Prevalence on Test Performance?

The prevalence of a disease in a population can significantly impact the PPV and NPV:
High prevalence increases the PPV but decreases the NPV.
Low prevalence decreases the PPV but increases the NPV.
Thus, the same test may perform differently in populations with varying disease prevalence.

Frequently asked queries:

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What is the Impact of Prevalence on Test Performance?
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