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Directions: Each of the following questions or incomplete statements is followed by two or more suggested answers or completions. Choose the one answer that is best in each case.

Question 3.
Data obtained during the evaluation of a diagnostic test for a disease with a prevalence of 10% is shown.

Patient Status Positive Result Negative Result Total
Disease 100 0 100
No disease 200 700 900
Total 300 700 1,000

Which of the following statements regarding the data is correct?

A)The diagnostic sensitivity is 100%.
B)The diagnostic specificity is 70%.
C)The predictive value of a positive test is 100%.
D)The predictive value of a negative test is 70%.
E)The efficiency of the test is 43%.

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