A screening examination was performed on 250 persons for Factor X, which is found in disease...

A screening examination was performed on 250 persons for Factor X, which is found in disease Y. A definitive diagnosis for disease Y among the 250 persons had been obtained previously. The results of diagnoses are charted here:

Test Results	Disease Present	Disease Absent
Positive for Factor X	40	60
Negative for Factor X	10	140

Based on the information provided, which of the following expresses the sensitivity of this test?

A) 30%

B) 70%

C) 56%

D) 80%

Based on the information provided, which of the following expresses the specificity of this test?

A) 30%

B) 70%

C) 56%

D) 7%

Based on the information provided, the predictive value (+) is _____ and the predictive value (-) is__________.

A) 40%, 93%

B) 70%, 56%

C) 93% 40%

D) 56%, 70%

Solutions

Expert Solution

1. D) sensitivety : 80%

2. B)specifically: 70%

3. A) 40%,93%

orchestra answered 11 months ago

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