Epidemioloogy Calculations

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6 Terms

1
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Define sensitivity:

The ability of a test, case definition, or surveillance system to identify true cases

2
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Define specificty:

The ability or a test, case definition, or surveillance system to exclude persons without the health condition of interest.

3
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How is sensitivity calculated?

Groups being tested for differences have some underlying difference which is not controlled.

4
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What is positive predictive value?

The proportion of patients or outbreaks detected by surveillance who truly have the disease (or are true outbreaks).

5
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How is specificity calculated?

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6
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How is positive predictive value calculated?

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