Baseline characteristics of the study population without pre-existing atrial fibrillation in accordance with the level of forced expiratory volume in one second (FEV1) % predicted
| Characteristics | FEV1 % pred | ||
| <60% | 60–80% | ≥80% | |
| Subjects n | 1238 | 3872 | 8320 |
| Females | 588 (47.5) | 2065 (53.3) | 4693 (56.4) |
| Age yrs | 56.5±10.2 | 52.6±11.8 | 51.4±12.1 |
| BMI kg·m−2 | 25.4±4.9 | 25.4±4.4 | 25.0±3.9 |
| Systolic blood pressure mmHg | 141.3±23.0 | 138.1±21.9 | 135.8±21.2 |
| Diastolic blood pressure mmHg | 84.9±12.8 | 82.9±12.2 | 82.4±12.2 |
| Blood glucose mm·L−1 | 6.82±2.06 | 6.73±1.96 | 6.52±1.50 |
| FEV1/FVC % | 63.9±13.8 | 75.6±9.4 | 82.7±7.6 |
| Current smokers | 904 (73.0) | 2818 (72.8) | 4827 (58.0) |
| Daily tobacco consumption g# | 12.0±10.6 | 12.1±10.6 | 9.0±10.4 |
| Exsmokers | 186 (15.1) | 515 (13.3) | 1517 (18.3) |
| Chest pain at activity | 317 (25.6) | 566 (14.6) | 739 (8.9) |
| Diabetes | 66 (5.3) | 140 (3.6) | 168 (2.0) |
| Treated with diuretics | 165 (13.5) | 348 (9.0) | 615 (7.4) |
| Education <9 yrs of school | 1003 (81.3) | 2636 (68.2) | 4833 (58.2) |
Data are presented as mean±sd or n (%) unless otherwise indicated
BMI: body mass index
#: among current smokers
For all characteristics p<0.001