Epidemiology & Prevention USMLE Step 1 Practice Question
A rapid screening test for celiac disease has the same sensitivity and specificity in all populations. A family medicine clinic uses the test in asymptomatic adults, whereas a gastroenterology clinic uses the same test in patients with chronic diarrhea, weight loss, and iron deficiency anemia. Which of the following test characteristics is most likely to be higher in the gastroenterology clinic population?
Answer choices
- AFalse-negative rate
- BSpecificity
- CNegative likelihood ratio
- DPositive predictive valueCorrect answer
- ESensitivity
- FNegative predictive value
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