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  3. a screening examination was performed on 250 perso

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

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Statistics

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%

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