Factors which may be associated with AF recurrence in patients undergoing catheter ablation based on multivariate Cox regression survival models after adjustment
| Weighted | |||||||
| Normal | Overweight | Obese | P value | HR | 95% CI | P-value HR | |
| Age median | 60 (51.0–66.0) | 59 (52.0–65.0) | 59.0 (52.0–64.0) | NA | 1.003 | 0.995 to 1.011 | 0.491 |
| Obese versus overweight | 1.223 | 1.047 to 1.429 | 0.011* | ||||
| Obese versus normal | 1.167 | 0.965 to 1.412 | 0.112 | ||||
| Overweight versus normal | 0.954 | 0.798 to 1.140 | 0.605 | ||||
| AAD after procedure | 447/644 (69.4%) | 917/1335 (68.7%) | 635/921 (69.0%) | 0.955 | 1.2 | 1.035 to 1.391 | 0.016* |
| Achievement of exit and entrance block | 489/644 (75.9%) | 1033/1335 (77.4%) | 713/921 (77.4%) | 0.743 | 0.817 | 0.701 to 0.954 | 0.010* |
| First or redo procedure | 1.054 | 0.897 to 1.240 | 0.521 | ||||
| Cardiovascular risk factors | |||||||
| Hypertension | 349/644 (54.3%) | 738/1335 (55.3%) | 500/921 (54.2%) | 0.864 | 1.026 | 0.8865 to 1.216 | 0.767 |
| CHA2D2S-VASc | 1.6 (1.4) | 1.6 (1.4) | 1.6 (1.3) | NA | 1.026 | 0.942 to 1.117 | 0.558 |
| Mean (SD) | |||||||
| OSA | 16/644 (2.5%) | 47/1335 (3.5%) | 32/921 (3.4%) | 0.452 | 1.028 | 0.726 to 1.455 | 0.877 |
| Type of AF | |||||||
| Long-standing persistent versus persistent AF | 1.202 | 0.889 to 1.627 | 0.232 | ||||
| Paroxysmal versus persistent AF | 0.806 | 0.696 to 0.934 | 0.004* | ||||
*P<0.05.
AAD, antiarrhythmic drug; AF, atrial fibrillation; NA, not applicable; OSA, obstructive sleep apnoea.