A screening test gave 45 true positives, 5 false negatives, 5 false positives and 145 true negatives. What is the positive predictive value?
Answer and explanation
Correct answer: A. 90%
- Step 1: The positive predictive value is the share of positive results that are true: TP / (TP + FP).
- Step 2: 45 / (45 + 5) = 90%.
Answer
90%.
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