Question 66 · LEK · Diagnostic sensitivity and specificity
A population-based screening of breast cancer was performed using mammography. The sensitivity of the diagnostic tool was 90%, and its specificity was 95%. As a result it can be estimated that in the examined population:
- A. 5% of the screening participants have a false positive result.
- B. 10% of the screening participants have a true positive result.
- C. 10% of the screening participants have a true negative result.
- D. 95% of the screening participants have a true positive result.
- E. 90% of the screening participants have a true negative result.
Hint
Specificity concerns the healthy people tested; translate 95% into the proportion of healthy people who get a wrong positive result.
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