USMLE Step 3 Practice Questions - United States Medical Licensing Examination Step 3 Exam

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A new screening test for colorectal cancer is being evaluated. In a study of 10,000 patients, the test results were compared to colonoscopy (gold standard). The screening test was positive in 180 patients, of whom 90 had cancer on colonoscopy. The test was negative in 9,820 patients, of whom 40 had cancer on colonoscopy. What is the negative predictive value of this screening test?

89.5% 90.0% 95.5% 99.6%

Correct Answer:

99.6%

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