Statistics: How to Calculate Specificity in 3 Steps

Specificity is descriptive of a test. It describes the probability that the test will correctly not detect a diagnostic marker in a patient where it is truly absent. Calculating statistical specificity can be done in 3 simple steps. Sensitivity and specificity are often explained together. I think this is mostly done by convention even thoughContinue reading “Statistics: How to Calculate Specificity in 3 Steps”

Statistics: How to Calculate Sensitivity

To perform a diagnostic test we take body samples and measure the presence and quantity of a specific substance. We then compare that value to standardized ranges to help rule in or rule out the presence of pathology. One way we do this is by calculating sensitivity. A diagnostic test is accurate when: This doesContinue reading “Statistics: How to Calculate Sensitivity”