Table 1.
Baseline characteristics of participants according to sleeping hours/day: the SUN cohort 1999–2011 a
| Sleeping hours/day |
||||
|---|---|---|---|---|
| <5 | 5 to <7 | 7 to <8 | ≥8 | |
| N | 304 | 2,391 | 4,770 | 3,067 |
| Age, years | 42.8 (13.7) | 40.9 (12.5) | 39.4 (10.8) | 37.0 (11.2) |
| Men, % | 46.7 | 48.6 | 47.1 | 37.1 |
| BMI, kg/m2 | 23.7 (2.9) | 23.8 (2.9) | 23.4 (2.8) | 23.0 (2.9) |
| Regular snorer, % | 20.7 | 21.6 | 17.9 | 15.2 |
| Insomnia, % | 5.8 (2.0) | 5.6 (2.1) | 5.7 (2.1) | 5.7 (2.1) |
| Siesta, % | 57.2 | 59.1 | 60.6 | 59.8 |
| Previous weight gain, % b | 42.1 | 33.9 | 34.1 | 34.0 |
| Physical activity, MET-s/week | 20.6 (24.2) | 21.7 (24.3) | 21.3 (21.3) | 20.9 (22.7) |
| Sitting, h/day | 5.8 (2.0) | 5.6 (2.1) | 5.7 (2.1) | 5.7 (2.1) |
| Current smokers, % | 24.0 | 23.7 | 21.7 | 21.6 |
| Former smokers, % | 28.6 | 30.6 | 30.3 | 29.0 |
| Total energy intake, kcal/day | 2,319 (687) | 2,345 (650) | 2,384 (611) | 2,365 (599) |
| Carbohydrate intake, % of energy | 44.1 (8.1) | 43.6 (7.5) | 43.5 (7.1) | 43.6 (7.3) |
| Protein intake, % of energy | 17.8 (4.0) | 18.2 (3.3) | 17.9 (3.1) | 17.9 (3.2) |
| Total fat intake, % of energy | 35.7 (7.8) | 35.8 (6.7) | 36.4 (6.2) | 36.7 (6.6) |
| Alcohol intake, % of energy | 2.4 (3.7) | 2.3 (3.6) | 2.2 (2.9) | 1.8 (2.6) |
| Fast food, g/day | 18.3 (20.9) | 20.1 (22.8) | 21.3 (19.4) | 21.3 (19.6) |
| Sugared-soft drinks, ml/day | 61.8 (146.6) | 61.5 (132.9) | 61.0 (114.0) | 62.2 (132.3) |
| Snacking between meals, % | 33.2 | 32.5 | 30.0 | 32.2 |
| Caffeine, mg/day | 43.5 (44.6) | 46.0 (44.5) | 44.7 (38.5) | 39.7 (37.7) |
a
Values are expressed as mean (SD), unless otherwise stated.
b
≥3 kg in the 5 years before the baseline assessment.