Pooled baseline clinical features of the included studies (61 008 patients)
| Variables | Median value |
| Age (y) | 67 (57–69) |
| Female sex (%) | 56 (30–59) |
| Hypertension (%) | 32 (29–32) |
| Diabetes (%) | 10 (9–15) |
| Coronary heart disease (%) | 8 (5–19) |
| Heart failure (%) | 3 (0–3) |
| Previous stroke/TIA (%) | 0 (0–2) |
| Incident AF (%) | 76 (74–100) |
AF, atrial fibrillation; TIA, transient ischaemic attack.