SOLVED4940

A screening test for lung cancer using annual CAT scans is developed with the intention of screening heavy smokers. 300 middle-aged men with a smoking history who had been worked up for cancer were scanned; the radiologic diagnosis was compared to the final work-up diagnosis. The following results apply: patients with lung cancer patients without lung cancer totals positive scan 45 25 70 negative scan 5 225 230 totals 50 250 300 In this example, the positive predictive value of the test is: Group of answer choices 90% (225/250) 10% (5/50) 17% (50/300) 64% (45/70)
SCIENCE
HEALTH SCIENCE
NURSING

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