Table 2.
HR and 95% CI for incident obesity during the follow-up in 10,532 participants according to sleeping hours/day: the SUN cohort 1999–2011
| Sleeping hours/day |
|||||
|---|---|---|---|---|---|
| < 5 | 5 to <7 | 7 to<8 | ≥8 | p quadratic trend | |
| Person years | 2,035 | 15,546 | 31,363 | 20,468 | |
| Incident cases | 19 | 123 | 187 | 117 | |
| Crude HR (95% CI) | 1.58 (0.99–2.54) | 1.34 (1.07–1.68) | 1.00 Ref. | 0.96 (0.76–1.21) | 0.01 |
| Age-sex-adjusted HR (95% CI) | 1.60 (1.00–2.57) | 1.33 (1.06–1.67) | 1.00 Ref. | 1.04 (0.82–1.31) | 0.03 |
| Multivariable HR a (95% CI) | 1.54 (0.95–2.49) | 1.25 (0.99–1.58) | 1.00 Ref. | 1.06 (0.84–1.33) | 0.13 |
| Multivariable HR b (95% CI) | 1.94 (1.19–3.18) | 1.15 (0.91–1.44) | 1.00 Ref. | 1.13 (0.89–1.43) | 0.06 |
a
Adjusted for age, sex, smoking status, physical activity, time spent sitting down, fast food, sugared soft drinks, snacking between meals, total energy intake, caffeine, alcohol, snoring, insomnia and siesta hours.
b
Additionally adjusted for baseline BMI.