skip to main content

Diagnostic Test Specificity — NDEB AFK MCQ

Instant feedback + full explanation. One question, done properly.

ModerateCommunity Dentistry & EpidemiologyDiagnostic Test SpecificityNDEB AFK

The concept of specificity of a diagnostic test refers to which measurement?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: E — The proportion of those without the disease who correctly test negative

Specificity (true negative rate) is the proportion of individuals without the disease who are correctly identified as negative by the test: TN/(TN+FP). A highly specific test has few false positives and is useful for confirming (ruling in) disease (SpPIn: Specificity rules in). A test with 100% specificity produces no false positives — all positive results are true positives.

Reference: Burt & Eklund – Dentistry, Dental Practice, and the Community, 7th ed., 2005