A New Nuclear Stress Test Modality Is Tested in a Broad

A new nuclear stress test modality is tested in a broad range of patients with suspected coronary artery disease.  The patients' pre-test probability of having the disease is determined by their Framingham score.  Their post-test probability is then calculated using the results of the new test, and the following curves are constructed.

The new test is most useful for diagnosing coronary artery disease in patients with which of the following pretest probabilities?

A) < 10%
B) 10%-20%
C) 40%-60%
D) 80%-90%
E) > 90%

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