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Question: Stats
In a population of 1,000 people, 100 have a disease. A test is positive in 95 people with the disease and 100 people without the disease. What is the sensitivity, specificity, and positive predictive value of this test?
Kelly April 30, 2016 - 11:56 pm
Sensitivity: positivity in disease = 95/100 = 95%. Specificity: negativity in health = 800/900 = 89%. PPV: disease/all pos = 95/195 = 49%
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