Characteristics of the studied population (N=348)
| Mean (SD) | |
| Men, % | 75.6 |
| Age, years | 48.7 (11.8) |
| Body mass index | 31.0 (6.6) |
| Subjective sleep time/day, h | 6.9 (1.4) |
| Subjective nap time, h | 0.5 (0.6) |
| Epworth sleepiness scale | 11.6 (5.0) |
| Alcohol, g | 8.9 (22.3) |
| Smokers, % | 23.9 |
| Hypertension, % | 30.7 |
| Cardiovascular events, % | 5.6 |
| Systolic pressure, mm Hg | 130.5 (17.2) |
| Diastolic pressure, mm Hg | 76.0 (12.1) |
| Home to hospital distance, km | 20.6 (33.0) |
| Starting home, % | 47.7% |