Table 1.
Baseline clinical variables, stratified by AF recurrence during 1-year follow up
| Variables | Total (n = 3128) | Arrhythmic recurrence | ||
|---|---|---|---|---|
| No (n = 2331) | Yes (n = 797) | P-value | ||
| Age (years) | 58.09 (10.28) | 57.99 (10.27) | 58.38 (10.30) | 0.361 |
| Male gender (%) | 2148 (68.7) | 1604 (68.8) | 544 (68.3) | 0.804 |
| BMI (kg/m2) | 28.40 (4.46) | 28.29 (4.45) | 28.74 (4.45) | 0.017 |
| eGFR CKDEPI (mL/min/1.73 m2) | 80.80 (18.47) | 81.62 (18.30) | 78.47 (18.77) | <0.001 |
| Heart failure (%) | 431 (20.6) | 298 (19.5) | 133 (23.6) | 0.046 |
| CAD (%) | 367 (17.9) | 264 (17.6) | 103 (18.4) | 0.730 |
| Structural heart disease (%) | 535 (25.5) | 379 (24.8) | 156 (27.5) | 0.230 |
| Stroke/TIA (%) | 96 (3.1) | 68 (2.9) | 28 (3.5) | 0.476 |
| Device carrier (%) | 138 (4.4) | 87 (3.7) | 51 (6.4) | 0.002 |
| Smoker status (%) | 0.066 | |||
| ȃFormer (≥1 month) | 588 (19.7) | 417 (18.8) | 171 (22.4) | |
| ȃNo | 2082 (69.9) | 1573 (71.0) | 509 (66.7) | |
| ȃYes | 309 (10.4) | 226 (10.2) | 83 (10.9) | |
| Diabetes (%) | 301 (9.7) | 220 (9.5) | 81 (10.2) | 0.599 |
| Hypertension (%) | 1680 (53.9) | 1221 (52.7) | 459 (57.6) | 0.019 |
| Dyslipidaemia (%) | 988 (32.2) | 739 (32.4) | 249 (31.8) | 0.809 |
| Hyperthyroidism (%) | 72 (2.3) | 45 (2.0) | 27 (3.5) | 0.026 |
| PAD (%) | 55 (1.8) | 42 (1.8) | 13 (1.6) | 0.751 |
| COPD (%) | 69 (2.3) | 49 (2.2) | 20 (2.5) | 0.616 |
| Obstructive sleep apnoea (%) | 105 (3.6) | 80 (3.7) | 25 (3.4) | 0.762 |
| CHA2DS2-VASc score | 1.58 (1.32) | 1.55 (1.32) | 1.66 (1.33) | 0.043 |
| AF type (%) | 0.005 | |||
| ȃParoxysmal AF | 2130 (68.1) | 1620 (69.5) | 510 (64.0) | |
| ȃPersistent AF | 998 (31.9) | 711 (30.5) | 287 (36.0) | |
| AFL (%) | 724 (24.1) | 529 (23.6) | 195 (25.7) | 0.264 |
| Previous failed antiarrhythmic drugs (%) | 2782 (89.7) | 2064 (89.3) | 718 (90.8) | 0.273 |
| Baseline LVEF (%) | 59.81 (8.54) | 60.01 (8.49) | 59.20 (8.65) | 0.045 |
| Baseline LVEDV (mL) | 112.47 (30.62) | 112.84 (30.17) | 111.57 (31.74) | 0.543 |
| Baseline LA diameter (mm) | 42.63 (6.67) | 42.22 (6.64) | 43.81 (6.61) | <0.001 |
| Baseline sinus rhythm (%) | 1968 (62.9) | 1514 (65.0) | 454 (57.0) | <0.001 |
| Abnormal ECG (%) | 1885 (60.3) | 1362 (58.4) | 523 (65.6) | <0.001 |
| Re-do procedure (%) | 674 (21.5) | 490 (21.0) | 184 (23.1) | 0.240 |
AF, atrial fibrillation; AFL, atrial flutter; BMI, body mass index; CAD, coronary artery disease; eGFR, estimated glomerular filtration rate; LA, left atrium; LVEDV, left ventricular end-diastolic volume; LVEF: left ventricular ejection fraction; PAD, peripheral artery disease; TIA, transient ischaemic attack.