Question

Consider a certain screening test for type two diabetes which has a sensitivity of 85% in...

Consider a certain screening test for type two diabetes which has a sensitivity of 85% in a specificity 73%. Suppose the probability that randomly select Canadian adult has type two diabetes is 7%.
A) what is the probability a random select Canadian adult will have positive results from the type two diabetes screening test ?
b) If randomly selected Canadian adult has positive test result what is the probability they have type 2 diabetes?

Math   Statistics-And-Probability   
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Answer #1

sensitivity is the ability of a test to correctly identify those with the disease (true positive rate)

specificity is the ability of the test to correctly identify those without the disease (true negative rate)

A)

0.3106

B)

0.0595/(0.0595+0.2511) = 0.1916

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