POPM 3240 Lecture Notes - Lecture 4: Mammography, Cardiac Stress Test, Alcohol Dependence
23 Apr 2019
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Compare this to the performance of the johne"s elisa test from last class: Series interpretation: we call a test test + , only if individuals test positive on both tests. Parallel interpretation: we call a test test + if the individual tests positive to one test, Or the other test, or to both tests. Multiple tests used one after another to determine a final decision: 1st test is cheaper, or less invasive/uncomfortable, 2nd test is often more expensive, laborious, invasive/uncomfortable. For example: breast cancer: need to find something suspicious in the first stage (mammography) to make it to the second test (biopsy) However, it decreases the sensitivity because theres a higher chance of false negatives. Multiple tests used simultaneously to determine a final decision: only 1 test must be positive to be called a. Positive : both tests must be negative to be called a negative.
