Table 3.

Overview of ECG categories in the dataset.

Code	Category	Count
A	Overall interpretation	13905
B	Technical conditions	0
C	Sinus node rhythms and arrhythmias	4643
D	Supraventricular arrhythmias	622
E	Supraventricular tachyarrhythmias	787
F	Ventricular arrhythmias	1067
G	Ventricular tachyarrhythmias	0
H	Atrioventricular conduction	370
I	Intraventricular and intra-atrial conduction	2195
J	Axis and voltage	612
K	Chamber hypertrophy or enlargement	229
L	ST segment, T wave, and U wave	5125
M	Myocardial infarction	260
N	Pacemaker	0