Table 3.
Self-reported sleep duration (h) |
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---|---|---|---|---|---|---|---|
less than 6 (n = 228) |
6–6.9 (n = 1,079) |
7–7.9 (n = 1,073) |
8 or more (n = 252) |
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Odds Ratio | 95% CI | Odds Ratio | 95% CI | Reference | Odds Ratio | 95% CI | |
Model 1b | 2.53 | (1.47, 4.37) | 1.08 | (0.71, 1.64) | 1.00 | 0.78 | (0.36, 1.67) |
Model 2c | 2.55 | (1.48, 4.42) | 1.07 | (0.71, 1.63) | 1.00 | 0.76 | (0.36, 1.65) |
Model 3d | 2.50 | (1.44, 4.33) | 1.06 | (0.70, 1.61) | 1.00 | 0.76 | (0.35, 1.63) |
Model 4e | 2.46 | (1.41, 4.31) | 1.03 | (0.68, 1.58) | 1.00 | 0.75 | (0.35, 1.62) |
Obesity was defined as a BMI ≥ 25 kg/m2 according to the criteria determined by the Japan Society for the Study of Obesity
Model 1, age and baseline BMI
Model 2, Model 1 + current medication, family history of disease, smoking, drinking, and exercise
Model 3, Model 2 + preference for fatty food
Model 4, Model 3 + skipping breakfast, snacking, and eating out.