Figure 3From: Optimizing the diagnostic power with gastric emptying scintigraphy at multiple time points Receiver's Operating Characteristic (ROC) Curve for classification tree models. The full model has the largest area under the Receiver's Operating Characteristic Curve (ROC) followed by the combination of post-meal % retention at 2-h, and 4-h. Individually, the best time point is 4-h, followed by 3-h.Back to article page