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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:
What Causes Variability in Test Performance?
How Do Sensitivity and Specificity Affect Test Performance?
What is Positive Predictive Value (PPV) and Negative Predictive Value (NPV)?
What is the Impact of Prevalence on Test Performance?
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How is Epidemiology Related to Occupational Health?
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What Role Does Water Quality Play in Epidemiology?
How is Meningitis Prevented?
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