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General Practice Notebook
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positive predictive value

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Positive predictive value:

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

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

 Target Disorder PresentTarget Disorder Absent
Test result positiveTrue Positive (TP)False Positive (FP)
Test result negativeFalse Negative (FN)True Negative (TN)

 

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General Practice Notebook
General Practice Notebook
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