Table 1.
Baseline clinical characteristics of the 136 unrelated patients with idiopathic AF.
| Parameter | Number or mean | Percentage or range |
| Male | 71 | 52 |
| Age at the initial diagnosis of AF (years) | 51.8 | 20–60 |
| Age at the time of the present study (years) | 56.7 | 22–65 |
| Type of AF at presentation | ||
| Paroxysmal AF | 88 | 65 |
| Persistent AF | 27 | 20 |
| Long-lasting persistent AF | 21 | 15 |
| Positive family history of AF | 48 | 35 |
| History of cardioversion | 112 | 82 |
| History of pacemaker | 7 | 5 |
| Resting heart rate (beats per minute) | 76.5 | 58-160 |
| Systolic blood pressure (mmHg) | 126.4 | 90-136 |
| Diastolic blood pressure (mmHg) | 87.2 | 62-89 |
| Body mass index (kg/m2) | 22.4 | 20-24 |
| Left atrial dimension (mm) | 38 | 30-40 |
| Left ventricular ejection fraction | 0.6 | 0.5-0.7 |
| Fasting blood glucose (mmol/L) | 4.6 | 3.6-5.8 |
| Total cholesterol (mmol/L) | 4.0 | 3.0-5.6 |
| Triglycerides (mmol/L) | 1.5 | 0.8-1.7 |
| Medications | ||
| Amiodarone | 101 | 74 |
| Warfarin | 29 | 21 |
| Digoxin | 23 | 17 |
| Beta-blocker | 16 | 12 |
| Calcium channel blocker | 11 | 8 |