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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?

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pemsou5_wp • April 30, 2016


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  1. Kelly April 30, 2016 - 11:56 pm Reply

    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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