Evaluating the AUC for an ROC curve (2004-07-27)

This page has moved to my new website.

Someone asked me where I got the following guidance for Area Under the Curve (AUC) for a Receiver Operating Characteristic (ROC) curve.

I cannot find where I got these numbers. It must be a sign of senility on my part. I'll keep looking, but if anyone else knows of justification for this or any other rule, let me know.

I did find a web page (gim.unmc.edu/dxtests/roc3.htm) that suggested this rule

but the evenness of the intervals strikes me as rather arbitrary. I'll keep looking.

This page was written by Steve Simon while working at Children's Mercy Hospital. Although I do not hold the copyright for this material, I am reproducing it here as a service, as it is no longer available on the Children's Mercy Hospital website. Need more information? I have a page with general help resources. You can also browse for pages similar to this one at Category: Diagnostic testing.