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Figure 1 Univariate risk of postoperative permanent pacing in the prediction group based on preoperative electrocardiogram. The overall risk of permanent pacing for the cohort was 5.5%. A-fib = atrial fibrillation; LBBB = left bundle branch block; N = number who received postoperative permanent pacemaker/number with given characteristic; PR = PR interval; RBBB = right bundle branch block.