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Prevention & Screening (Sensitivity (The sensitivity of a test…
Prevention & Screening
Sensitivity
- The sensitivity of a test measures how well it classifies people with the disease as sick.
- The probability of a diseased person having a positive test result.
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Specificity
- The specificity of a test measures how well it classifies people without the disease as healthy.
- The probability of a non-diseased person having a negative test result.
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PPV
- The positive predictive value measures how well a positive test result predicts disease in a specific population
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NPV
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- The probability of a person with a negative test result being non-diseased
- The negative predictive value measures how well a negative test results predicts absence of disease in a specific population
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