Question 31 (part 2) · LDEK · Diagnostic sensitivity and specificity
A new diagnostic test X was evaluated for diagnostic accuracy in a group of 1,000 people, including 500 people with clinical diagnosis of X disease and 500 healthy people without the diagnosis of X disease. A positive test result was found in 400 people with X disease and 100 healthy people. The results obtained indicate that:
- A. the diagnostic sensitivity of test X is 40%.
- B. the diagnostic specificity of the test is 40%.
- C. the test is charcterized by higher diagnostic sensitivity than specificity.
- D. the test is charcterized by lower diagnostic sensitivity than specificity.
- E. the test is charcterized by equal diagnostic sensitivity and specificity.
Hint
Build a 2x2 table: sensitivity uses true positives among the sick, specificity uses true negatives among the healthy.
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