MFPH Part A (DFPH) Practice Questions - MFPH Part A Diplomate Examination (DFPH) Exam

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A new screening test for a disease with 1% prevalence has sensitivity 90% and specificity 90%. Of 1,000 people screened, approximately how many of those who test positive will actually have the disease (positive predictive value)?

About 90% About 50% About 8% About 1%

Correct Answer:

About 8%

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