If people have diseases, tests {medical testing} have probabilities {sensitivity, test} of finding diseases. If people do not have diseases, tests have probabilities {specificity, test} of indicating no diseases. Diseases have probabilities {prevalence, disease} in populations. Prevalence is typically less than one per thousand. Probability that people have disease if tested positive is prevalence times sensitivity divided by one minus specificity: p * se / (1 - sp).
Biological Sciences>Medicine>Medical Treatments>Medical Testing
4-Medicine-Medical Treatments-Medical Testing
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Date Modified: 2022.0224