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

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A screening program for breast cancer using mammography is implemented in a community. The test has 85% sensitivity and 90% specificity. If the prevalence of breast cancer in this population is 1%, what is the probability that a woman with a positive screening test actually has breast cancer?

1% 8% 15% 79%

Correct Answer:

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