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Social & Preventive Medicine Screening 215a06d6

ELISA test has sensitivity of 95% and specificity of 95%. Prevalence of HIV carries is 5%. The predictive value of positive test is-

A

95%

B

50%

C

100%

D

75%

High-Yield Explanation

Ref:Parks 23rd edition pg 139 Construct a 2x2 table using the above data. 4.75 4.75 0.25 9.25 PPV = TP / (TP + FP) = 4.75/(4.75+4.75)=0.5

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