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Termination of Persistent AF according to Regularity Indexes Receiver Operating Characteristic Curve of after PVI change in TRI (A) and SRI (B) expressed as changes from baseline for AF termination of persistent AF by catheter ablation in the entire population. Arrows shows optimal cutoff point for sensitivity and specificity. AUC=area under the ROC; CI=confidence interval; other abbreviations as in Figure 1.
