Multiple Choice
A new biomarker has been identified that allows for the early detection of invasive gastric carcinoma. It has a sensitivity of 89% and a specificity of 85% when compared to endoscopy with multiple biopsies. The test is used in 2 groups: a population in the United States, where 5 out of 100,000 people have gastric cancer, and a population in China, where 100 out of 100,000 people have been diagnosed with the disease. Which of the following is the most accurate statement concerning this new test?
A) Negative predictive value of the test is lower in the American population
B) Positive predictive value of the test is higher in the Chinese population
C) Sensitivity of the test is higher in the American population
D) Specificity of the test is higher in the Chinese population
E) The test is not reliable in the American population
Correct Answer:
Verified
Correct Answer:
Verified
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