Patient demographic characteristics
| Characteristic | No. (%) of patients | |||
|---|---|---|---|---|
| Atrial fibrillation n = 96 133 | Atrial flutter n = 5300 | Premature beats n = 41 613 | Supraventricular tachycardia n = 47 069 | |
| Sex | ||||
| Male | 48 872 (50.8) | 3084 (58.2) | 21 408 (51.4) | 24 102 (51.2) |
| Female | 47 260 (49.2) | 2216 (41.8) | 20 205 (48.6) | 22 967 (48.8) |
| Age at onset, yr | ||||
| < 65 | 29 005 (30.2) | 2213 (41.8) | 22 699 (54.6) | 35 664 (75.8) |
| ≥ 65 | 67 105 (69.8) | 3084 (58.2) | 18 904 (45.4) | 11 397 (24.2) |
| Region* | ||||
| North | 41 110 (42.8) | 2004 (37.8) | 16 789 (40.3) | 20 249 (43.0) |
| South | 55 023 (57.2) | 3296 (62.2) | 24 824 (59.7) | 26 820 (57.0) |
| Season at onset† | ||||
| Warm | 46 905 (48.8) | 2619 (49.4) | 20 664 (49.7) | 22 937 (48.7) |
| Cold | 49 228 (51.2) | 2681 (50.6) | 20 949 (50.3) | 24 132 (51.3) |