Two screening tests in series will increase
Condition 1 Condition 2 Test A,B,C,D,E (Screening Test in series ) Test A | B | C | D | E ** | Specificity & PPV | Sensitivity & NPV (Screening test in Parallel) (Together) * | A B C D E (Together) ** | Sensitivity & NPV | Specificity & PPV
Sensitivity alone
Specificity alone
Both Sensitivity and Negative predicative value
Both Specificity and Positive predicative value
Screening