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Negative predictive value

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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This is the post-test probability of a negative test. This test addresses the question - if a person has a negative test, what is the probability that he or she does not have the condition:

  • true negative / (false negative + true negative) x 100%

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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