Baseline characteristics of the registry participants
| Subjects n | 508 |
| Age years | 59.4±11.2 |
| Sex | |
| Male | 399 (79) |
| Female | 109 (21) |
| Race | |
| Caucasian | 491 (97) |
| Other | 7 (1) |
| Black | 6 (1) |
| Asian | 2 (<1) |
| American Indian or Alaska Native | 2 (<1) |
| BMI kg·m−2 | 29.3±3.9 |
| Systolic blood pressure mmHg | 130±13 |
| Diastolic blood pressure mmHg | 78±9 |
| AHI events·h−1 | 36.3±15.7 |
| ESS | 11.8±5.5 |
| Hypertension | 46.5 |
| Depression | 21.3 |
| Diabetes mellitus | 11.2 |
| Atrial fibrillation | 5.4 |
| Myocardial infarction | 3.8 |
| Stroke | 2.5 |
Data are presented as mean±sd, n (%) or %, unless otherwise stated. BMI: body mass index; AHI: apnoea/hypopnoea index; ESS: Epworth sleepiness scale.