Screening for rare disease (sensitivity and specificity of 99%)
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You are examined by an excellent screening test (sensitivity and specificity of 99%) for a rare disease (0.1% or 1/100 of the population). Unfortunately, the test is positive. What is the probability that you have the disease.
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Solution Summary
The expert examines screening for rare disease. Sensitivity and specificity of 99% is examined.
Solution Preview
We can use the following table to depict the test results vs. actual presence of the disease.
Has Disease
+ -
Test Results + a b
- c d
Commonly the following are the ...
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