receiver operating characteristic curve


re·ceiv·er op·er·at·ing char·ac·ter·is·tic curve

1. a plot of percentage of true positive results versus percentage of false positive results, usually in a trial of a diagnostic test. 2. a graphic means of assessing the ability of a screening test to discriminate between healthy and diseased people. Synonym(s): ROC curve

ROC curve

Receiver operating characteristic curve. A graphic depiction of the relationship between the true positive ratio (sensitivity) and false positive ratio (1) specificity as a function of the cut-off level of a disease or condition marker.