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Etymology: L, fallere, to deceive, positivus + ratum, calculate
the rate of occurrence of positive test results in subjects known to be free of a disease or disorder for which an individual is being tested.
false-pos·i·tive rate(fawls-poz'i-tiv rāt)
Percentage of incorrect results that are, in fact, negative.
The rate of occurrence of positive test results in those who do not have the attribute or disease for which they are being tested.
See also: rate