negative predictive value
Negative predictive value (NPV) is the probability that a patient who has received a negative screening test result does not actually has the disorder. NPV is important in counseling and managing patients.
Compare to specificity which describes the ability of a test to make a correct call in a case where it is already known that disease is not present (true negative rate). Specificity is important in laboratory medicine to define performance characteristics of a screening test.
Synonyms:
NPV
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