Risk ratio with 95% CIs for atrial fibrillation and stroke
| Exposure | N | Number of cases n (%) | Model 1 | Model 2 | Model 3 |
| Atrial fibrillation | |||||
| Non-athletes | 1807 | 325 (18.0) | 1 Reference | 1 Reference | 1 Reference |
| Athletes | 505 | 145 (28.7) | 1.64 (1.38 to 1.95) | 1.42 (1.17 to 1.73) | 1.88 (1.49 to 2.37) |
| Stroke | |||||
| Non-athletes | 1305 | 116 (8.9) | 1 Reference | 1 Reference | 1 Reference |
| Athletes | 479 | 23 (4.8) | 0.55 (0.35 to 0.85) | 0.60 (0.37 to 0.95) | 0.76 (0.47 to 1.24) |
Model 1: adjusted for age; model 2: additionally adjusted for body height, education, smoking status and frequency of alcohol intake; model 3: adjusted for model 2+coronary heart disease (atrial fibrillation only), diabetes (atrial fibrillation only), body mass index and antihypertensive medication. In the analysis of stroke, participants reporting coronary heart disease and diabetes at baseline were excluded.