Medical MCQ-A test has a high false positive rate in a community. True is

A test has a high false positive rate in a community. True is

High prevalence

Low prevalence

High sensitivity

High specificity

Question Category:

Social & Preventive Medicine

Correct Answer:

Low prevalence

Description:

The propoion of false-positive results among those who test positive is 1 minus the positive predictive value. False positive (discovery) rate = 1- positive predictive valueAs the disease prevalence increases, the positive predictive value increases. (PPV)As prevalence increase, PPV increase, False positive rate decrease.

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