Which statement differentiates sensitivity from specificity in screening tests?

Which statement differentiates sensitivity from specificity in screening tests?

• A. Sensitivity is the ability to correctly identify non-cases; specificity is the ability to correctly identify cases.
• B. Sensitivity is the ability to correctly identify cases; specificity is the ability to correctly identify non-cases.
• C. Both measure predictive value.
• D. Sensitivity is influenced by prevalence; specificity is not.

Answer: (B)