Positive predictive value
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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