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?
- A)Specificity
- B)False-negative rate
- C)Sensitivity
- D)Negative likelihood ratio
- E)Positive predictive valueGABARITO
Explicação
Positive predictive value increases as disease prevalence rises. Because the gastroenterology clinic population has a much higher pretest probability of celiac disease based on symptoms and associated findings, a positive result is more likely to represent tru... Ver explicação completa e trilha adaptativa →