When a diagnostic test is used in series mode then-
Ref:Parks 23rd edition pg 137 When used in series: Sensitivity decreases Specificity increases PPV increases NPV decreases When used in parallel : Sensitivity increases Specificity decreases PPV decreases NPV increases
Sensitivity increases but the specificity decreases
Specificity increases bu the sensitivity decreases
Both sensitivity and specificity increases
Both sensitivity and specificity decreases
Screening