Question

You have conducted a study on the sensitivity and specificity of a lab test for disease Y and draw the following conclusions:

• 125 students who have disease Y test positive
• 25 students who have disease Y test negative
• 500 students who do not have disease Y test negative
• 50 students who do not have disease Y test positive

1.What proportion of those who test negative does NOT have disease Y?

NPV = ( ) % (round to one decimal place)

2.What is the sensitivity of the test?

sensitivity = ( )% (round to one decimal place)

3.What is the specificity of the test?

specificity = ( )% (round to one decimal place)

Answer 1