Fig. 1

ROC curves of predictors of categorization into the Very high PCT group. Model 1: Pacing threshold–AUC, 0.733.Model 2: Pacing impedance–AUC, 0.689.Compare 2 models: Comparison of the ROC Model 1 and ROC Model 2. ROC indicates receiver operating characteristic; PCT indicates pacing capture threshold; and AUC indicates area under the curve.