Table 1. Baseline Characteristics.
| Control (n=50) | Lone AF (n=68) | P | |
|---|---|---|---|
| Age (yr) | 58.6±11.3 | 59.3±10.5 | 0.6 |
| Male sex (%) | 74.0 | 73.5 | 1.0 |
| Body mass index (kg/m2) | 26.9±4.4 | 27.5±4.5 | 0.5 |
| Duration of AF (months) | - | 60 (IQR 43-120) | - |
| Longest AF episodes (days) | - | 2 (IQR 0.5-30) | - |
| Echocardiography | |||
| Left atrial parasternal size (cm) | 3.4±0.5 | 3.9±0.7 | 0.004 |
| Left atrial volume (ml) | 52.7±15.5 | 66.0±23.1 | 0.002 |
| Left atrial volume index (ml/m2) | 26.8±6.8 | 32.3±10.8 | 0.005 |
| Left atrial area (cm2) | 18.5±3.5 | 21.6±5.0 | <0.001 |
| Inter-ventricular septum (mm) | 9.8±1.5 | 10.1±1.5 | 0.4 |
| Left ventricular ejection fraction (%) | 64±5 | 64±7 | 0.7 |
IQR: Inter-quartile range.