A New Biomarker Has Been Identified That Allows for the Early

question 64

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

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Definitions:

Illness

A state in which a person's physical, mental, or emotional condition is impaired or deteriorating.

Personality Tests

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