Table 2.

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.