Difference between revisions of "Specificity And Sensitivity"
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* Sensitivity or se'''N'''sitivity concerns the rate of false '''N'''egatives. | * Sensitivity or se'''N'''sitivity concerns the rate of false '''N'''egatives. | ||
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| + | This is where it gets confusing... | ||
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| + | * A false positive result means the truth is ''negative.'' So the test might have been '''a true negative''' instead of being '''a false positive''', those events are disjoint, and if the truth is negative, the result can't be anything else. | ||
Revision as of 19:16, 1 August 2016
Specificity and Sensitivity
Medical journals often report the Specificity and Sensitivity of tests for things like HIV or the Zika virus. These measures describe the rates of Type I and Type II errors.
- Specificity, or sPecificity, concerns the rate of false Positives.
- Sensitivity or seNsitivity concerns the rate of false Negatives.
This is where it gets confusing...
- A false positive result means the truth is negative. So the test might have been a true negative instead of being a false positive, those events are disjoint, and if the truth is negative, the result can't be anything else.
