What is the significance of a diagnostic test with a large positive likelihood ratio?
a. It provides only limited predictive value for disease.
b. It provides a high degree of certainty that the patient has the suspected disorder.
c. It mandates other supportive diagnostic tests.
d. It provides little assistance in clinical decision making.
ANS: B
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A A large positive likelihood ratio has strong predictive value.
B A test with a large positive likelihood ratio provides a high degree of certainty that the patient has the suspected disorder.
C A large positive likelihood ratio in a test is likely to decrease the need for other backup tests.
D A large positive likelihood ratio test is helpful in clinical decision making because it provides a high degree of certainty.
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