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Published on: June 3, 2009
Accuracy curves: an alternative graphical representation of probability data
1V. A. Medical Center, Long Beach, CA 90822.
Journal of Clinical Epidemiology
|January 1, 1989
Abstract:
Receiver operating characteristic (ROC) curves have been frequently used to compare probability models applied to medical problems. Though the curves are a measure of the discriminatory power of a model, they do not reflect the model's accuracy. A supplementary accuracy curve is derived which will be coincident with the ROC curve if the model is reliable, will be above the ROC curve if the model's probabilities are too high or below if they are too low. A clinical example of this new graphical presentation is given.
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