Table 1.
Baseline characteristics
| Overall (n = 136) |
No ERC (n = 96) |
ERC (n = 40) |
P value | |
|---|---|---|---|---|
| Age (y), mean | 60 ± 10 | 60 ± 10 | 60 ± 9 | .789 |
| Male sex, n (%) | 96 (71%) | 63 (66%) | 33 (83%) | .049 |
| AF duration, years | 4.3 ± 3.5 | 4.4 ± 3.8 | 3.9 ± 3.1 | .473 |
| CHA2DS2-VASc score | 1.5 ± 1.3 | 1.6 ± 1.4 | 1.4 ± 1.2 | .333 |
| Body mass index, kg/m2 | 27.0 ± 3.8 | 26.9 ± 3.8 | 27.3 ± 3.8 | .538 |
| AAD at baseline, n (%) | 115 (85%) | 82 (85%) | 33 (83%) | .668 |
| Amiodarone | 19 (14%) | 14 (15%) | 5 (13%) | .749 |
| Paroxysmal AF | 129 (95%) | 93 (97%) | 36 (90%) | .098 |
| Comorbidity | ||||
| Hypertension, n (%) | 57 (42%) | 44 (46%) | 13 (33%) | .151 |
| Dyslipidemia, n (%) | 39 (29%) | 24 (25%) | 15 (38%) | .142 |
| Diabetes, n (%) | 11 (8%) | 6 (6%) | 5 (135%) | .300 |
| Sleep apnea, n (%) | 9 (7%) | 5 (5%) | 4 (10%) | .449 |
| Coronary artery disease, n (%) | 19 (14%) | 13 (14%) | 6 (15%) | .823 |
| Structural heart disease, n (%) | 9 (7%) | 6 (6%) | 3 (8%) | .722 |
| Imaging | ||||
| LA diameter (mm), mean, SD | 41 ± 4 | 40 ± 4 | 41 ± 5 | .706 |
AAD = antiarrhythmic drugs; AF = atrial fibrillation; LA: left atrium.