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Social & Preventive Medicine Screening b23070cb

Population is 10,000. Of these 20% is having disease. The screening test has 95% sensitivity and 80% specificity. PPV is-

A

54.3%`

B

98.50%

C

47.50%

D

20%

High-Yield Explanation

Ref:Parks 23rd edition pg 139 Construct a 2x2 table using the above data. 1900 1600 100 6400 PPV = TP / (TP +FP) = 1900/ (1900+1600) =54.3

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