Figure 1
(A) Performance and external validity of models trained at individual institution. (B) Stratification analyses on patient characteristics and electrocardiogram abnormalities in Brigham and Women’s Hospital. AF, atrial fibrillation; CLBBB, complete left bundle branch block; HR, heart rate; PM, pacemaker.

(A) Performance and external validity of models trained at individual institution. (B) Stratification analyses on patient characteristics and electrocardiogram abnormalities in Brigham and Women’s Hospital. AF, atrial fibrillation; CLBBB, complete left bundle branch block; HR, heart rate; PM, pacemaker.

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