Receiver operating characteristic curve

From Citizendium, the Citizens' Compendium

In statistics and diagnostic tests, the receiver operating characteristic curve, also called ROC curve, is a "graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli."^[1]

Area under the ROC curve

The area under the ROC curve, called the AUC, c statistic, or c-index may measure discriminatory ability of a test of model. The c-index varies from 0 to 1 and a result of 0.5 indicates that the diagnostic test does not add to guessing.^[2] Variations have been proposed.^[3][4]

References

1. ↑ Anonymous, (2009) Receiver operating characteristic curve (English). Medical Subject Headings. U.S. National Library of Medicine.
2. ↑ Hanley JA, McNeil BJ (April 1982). The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology 143 (1): 29–36. PMID 7063747.
3. ↑ Walter SD (July 2005). The partial area under the summary ROC curve. Stat Med 24 (13): 2025–40. DOI:10.1002/sim.2103. PMID 15900606.
4. ↑ Bangdiwala SI, Haedo AS, Natal ML, Villaveces A (September 2008). The agreement chart as an alternative to the receiver-operating characteristic curve for diagnostic tests. J Clin Epidemiol 61 (9): 866–74. DOI:10.1016/j.jclinepi.2008.04.002. PMID 18687288.