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Positive predictive value

Authoring team

Positive predictive value:

  • true positives / (true positives + false positives) x100

i.e. the proportion of screening tests that are correct.

Target Disorder Present

Target Disorder Absent

Test result positive

True Positive (TP)

False Positive (FP)

Test result negative

False Negative (FN)

True Negative (TN)

 

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