A new screening test for cervix cancer has been developed. The data in the proba

Question

A new screening test for cervix cancer has been developed. The data in the probability table below describes the evaluation of the screening test. 5. No Disease Disease 0.04 Test + Test - 0.01t 0.89 0.05 0.95 1.00 0.060 90 0.10 What is the prevalence of disease in the population that was screened, i.e. P(D)? What is the sensitivity of the new screening test? What is the Specificity of the new screening test? Is the new screening test better at finding women with cervix cancer or is it better finding out who does not have cervix cancer?

Explanation / Answer

Sensitivity = Test Positive | Disease is present

= 0.04/0.10

= 0.4

= 40%

Specificity = Test Negative | No disease

= 0.89/0.90

= 0.9889

= 98.89

The test is better to if a woman does not have cervix cancer.

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