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predictive value


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In diagnostic and screening tests, the predictive value of a positive test is the probability that person whose test result is positive actually has the disease or condition for which the test was done. The predictive value of a negative test result is the probability that a person with a negative test result does not have the disease or condition for which the test was done. Predictive value is influenced by the prevalence of the condition or trait being investigated.

Subjects: Public Health and Epidemiology.


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