Table 1.
Baseline Characteristics of the Study Population
| Baseline characteristics | Participants without prevalent AF, n=9288 | Participants with prevalent AF, n=409 |
|---|---|---|
| Age, y, n=9288, n=409 | 64.9±9.7 | 73.0±10.0 |
| Sex, women, n (%), n=9288, n=409 | 5317 (57.2) | 185 (45.2) |
| Educational level, n=9205, n=406 | ||
| Primary education, n (%) | 1145 (12.4) | 69 (17.0) |
| Lower/intermediate general and lower vocational education | 3718 (40.4) | 174 (42.9) |
| Higher general and intermediate vocational education | 2688 (29.2) | 105 (25.9) |
| Higher vocational education and university | 1654 (18.0) | 58 (14.3) |
| BMI, kg/m2, n=9165, n=392 | 27.2±4.2 | 27.4±4.2 |
| Systolic blood pressure, mm Hg, n=9235, n=405 | 140±21 | 142±23 |
| Diastolic blood pressure, mm Hg, n=9235, n=405 | 79±11 | 77±13 |
| Hypertension, n (%), n=8955, n=403 | 5871 (62.0) | 349 (86.6) |
| History of diabetes, n (%), n=9288, n=409 | 1101 (11.9) | 77 (18.8) |
| History of CHD, n (%), n=9240, n=405 | 514 (5.6) | 56 (13.8) |
| History of HF, n (%), n=9288, n=409 | 184 (2.0) | 87 (21.3) |
| Smoking, n (%), n=9190, n=402 | ||
| Current smoking | 1796 (19.5) | 52 (12.9) |
| Past smoking | 4377 (47.6) | 223 (55.5) |
| Never smoking | 3017 (32.8) | 127 (31.6) |
| Alcohol use, g/d, n=7531, n=347 | 5.7 (0.5–14.6) | 5.1 (0.3–14.3) |
| eGFRcreat, mL/min per 1.73 m2, n=9288, n=409 | 81.1±14.7 | 70.6±18.8 |
| eGFRcys, mL/min per 1.73 m2, n=9288, n=409 | 77.3±18.8 | 61.9±19.5 |
| eGFRcreat‐cys, mL/min per 1.73 m2, n=9288, n=409 | 79.0±16.2 | 66.2±18.1 |
| Serum cholesterol, mmol/L, n=9239, n=400 | 5.7±1.0 | 5.4±1.0 |
| Cardiac medication use, n (%), n=9015, n=387 | 508 (5.6) | 166 (42.9) |
Data are presented as number (%), number (valid %), mean±SD, or median (interquartile range). Values are shown for non‐imputed data. For variables with missing data, valid % is given. AF indicates atrial fibrillation; BMI, body mass index; CHD, coronary heart disease; eGFR, estimated glomerular filtration rate; eGFRcreat, eGFR based on serum creatinine; eGFRcreat‐cys, eGFR based on serum creatinine and serum cystatin C; eGFRcys, eGFR based on serum cystatin C; and HF, heart failure.