Table 1. Clinical characteristics of all hospitalized patients with atrial fibrillation according to whether or not catheter ablation was performed.

Characteristics	Overall (n = 597,919)	Non-ablation (n = 539,936)	Ablation (n = 57,983)	P-value
Data are presented as means ± SD or n (%).
Age, yrs	68.74 ± 12.03	69.74 ± 11.70	59.47 ± 11.12	< 0.001
Female	278,546 (46.6%)	257,459 (47.7%)	21,087 (36.4%)	< 0.001
Comorbidities
Coronary heart disease	265,511 (44.4%)	257,215 (47.6%)	8296 (14.3%)	< 0.001
Heart failure	238,334 (39.9%)	235,631 (43.6%)	2703 (4.7%)	< 0.001
Hypertension	314,088 (52.5%)	286,856 (53.1%)	27,232 (47.0%)	< 0.001
Diabetes mellitus	99,126 (16.6%)	91,739 (17.0%)	7387 (12.7%)	< 0.001
Ischemic stroke	59,094 (9.9%)	56,944 (10.5%)	2150 (3.7%)	< 0.001
Hemorrhagic stroke	1168 (0.2%)	1143 (0.2%)	25 (0.04%)	< 0.001