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A screening test for a newly discovered disease is being evaluated for its performance as a screening test. In order to determine the effectiveness of the new test it was administered to 270 workers

A screening test for a newly discovered disease is being evaluated for its performance as a screening test. In order to determine the effectiveness of the new test, it was administered to 270 workers. A total of 42 individuals who had been diagnosed with the disease tested positive for it. Results showed a negative test for an additional 25 people with the disease. A total of 51 people without the disease tested positive.  What is the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the test? Please match the measures to their correct answers below.

A. 62.7%

B. 85.9%

C. 74.9%

D. 45.2%

E. 37.3%

F. 71.9%

1. Sensitivity

2. Specificity

3. Positive Predictive Value

4. Negative Predictive Value

5. Accuracy

6. None of these

2. A screening test wished to improve the diagnostic ability to identify Zika-infected fetuses in pregnancy rather than after birth.  A total of 330 pregnant women (carrying one baby each) in Miami were tested. A total of 36 babies had Zika; 24 of whom tested positive. A total of 300 babies tested negative for the virus.  What is the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the test? Please match the measures to their correct answers below.

A. 94.5%

B. 33.3%

C. 66.7%

D. 96.0%

E. 98.0%

F. 80.0%

1. Sensitivity

2. Specificity

3. Positive Predictive Value

4. Negative Predictive Value

5. Accuracy

6. None of these

3. What are the characteristics of a good screening test? Please select all that apply.

A. Expensive - high cost-benefit ratio

B. Acceptable - socially acceptable to the target group

C. Simple - easy to learn and to perform

D. Rapid - quick to administer and provide results

E. Multi-platform - available in several forms, including online, in the field, and over the phone

Apr 02 2020 View more View Less

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