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Social & Preventive Medicine Sensitivity, Specificity, PPV, NPV fba6cccf

If Two screening tests are used in Series, then there will be

A
Increased sensitivity and decreased specificity
B
Increased specificity and decreased sensitivity
C
Increased sensitivity and increased specificity
D
Decreased sensitivity and decreased specificity
High-Yield Explanation
Screening tests in series: A population is subjected to one screening test followed by a second screening test ; 2nd screening test is applied only in those in which the 1st screening test is positive. - In this, Combined values of Sensitivity decreases Specificity increases PPV increases NPV decreases
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