A screening test was positive in 50% of diseased and 10% of healthy population. What is the specificity of the test?
Correct Answer: 0.9
Description: Screening Test Gold Standard Positive Negative Positive 50 10 Negative 50 90 Specificity= True Negative / True Negative + False Positives = 90/90 + 10 = 90/100 = 0.9
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