A screening examination was performed on 250 persons forFactor X, which is found in disease Y. A definitive diagnosis fordisease Y among the 250 persons had been obtained previously. Theresults 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 thefollowing expresses the sensitivity of this test?
A) 30%
B) 70%
C) 56%
D) 80%
Based on the information provided, which of thefollowing 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%
