Table 1.
Baseline characteristics of participants
| Dortmund Health Study | Study of Health in Pomerania | Physicians’ Health Study | Women's Health Study | |
|---|---|---|---|---|
| Number of participants | 1299 | 4291 | 22 926 | 31 370 |
| Age (years) (mean±SD) | 52.2±13.8 | 50.3±16.4 | 67.8±9.0 | 63.6±6.9 |
| Women, n (%) | 688 (53.0) | 2185 (50.9) | 0 (0) | 31 370 (100) |
| RLS, n (%) | 96 (7.4) | 433 (10.1) | 1 717 (7.5) | 3745 (11.9) |
| BMI (kg/m2) (mean±SD) | 27.5±5.0 | 27.3±4.8 | 25.9±3.7 | 27.1±5.5 |
| Diabetes, diagnosed, n (%) | 98 (7.5) | 342 (8.0) | 1983 (8.7) | 2 342 (7.5) |
| Hypertension, diagnosed, n (%) | 461 (35.7) | 1729 (40.8) | 12 079 (52.7) | 15 223 (48.5) |
| Cancer, diagnosed, n (%) | 59 (4.6) | 53 (1.2) | 2306 (10.1) | 1818 (5.8) |
| Myocardial infarction, diagnosed, n (%) | 49 (3.8) | 146 (3.4) | 797 (3.5) | 248 (0.8) |
| Stroke, diagnosed, n (%) | 29 (2.2) | 98 (2.3) | 490 (2.1) | 251 (0.8) |
BMI, body mass index; RLS, restless legs syndrome.