sensitivity and specificity (of a screening test)
sensitivity and specificity (of a screening test) : Sensitivity is the proportion of truly diseased persons in the screened population who are identified as diseased by the screening test. Sensitivity is a measure of the probability of correctly diagnosing a case, or the probability that any given case will be identified by the test: synonym: true positive rate). Specificity is the proportion of truly nondiseased persons who are so identified by the screening test. It is a measure of the probability of correctly identifying a nondiseased person with a screening test: synonym: true negative rate. The relationships are shown in the following fourfold table, in which the letters a, b, c, and d represent the quantities specified below the table (Refer to Original Source)
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