Given a test in which there is overlap of the test results for diseased and non-

Question

Given a test in which there is overlap of the test results for diseased and non-diseased individuals (e.g., normal individuals are found who have test results ranging in value from 8 to 15, and diseased individuals are found who have test results ranging in value from 12 to 25, so that in the range of values 12 to 15 there are both normal and diseased individuals), if the current cutoff value lies in the range of this overlap and you move the cutoff value toward the normal population (lower numbers in this example), the true negative numbers will ____________ and false negative numbers will____________. Increase or Decrease

Explanation / Answer

If the cutoff value is moved towards the normal population,

then the chance of mis-classifying a diseased individual as

non-diseased individual decreases. Thus, the true negative

numbers will increase and false negative numbers will

decrease. (Ans).

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