Supplementary Table 2-1.

Prospective association of sleep duration with BMI gain^* between 2006 and 2007 by age above median (n = 15,678 men, n = 1,809 women)

	Model 1‡			Model 2§			Model 3¶
	β coefficient	95%CI	P value	β coefficient	95%CI	P value	β coefficient	95%CI	P value
Sleep Duration (Hours)
Men
< 5	0.022	0.032, 0.200	<0.01	0.021	0.025, 0.193	0.01	0.019	0.017, 0.185	0.02
5 to < 6	0.012	−0.012, 0.071	0.17	0.011	−0.015, 0.068	0.21	0.010	−0.018, 0.065	0.27
6 to < 7	0.010	−0.013, 0.046	0.27	0.009	−0.015, 0.044	0.33	0.009	−0.014, 0.045	0.31
7 to < 8				0.000
8 to < 9	−0.009	−0.089, 0.024	0.26	−0.008	−0.085, 0.027	0.31	−0.009	−0.085, 0.027	0.31
≥ 9	0.022	0.066, 0.398	< 0.01	0.022	0.064, 0.395	< 0.01	0.022	0.062, 0.393	< 0.01
Women
< 5	0.030	−0.077, 0.296	0.25	0.032	−0.068, 0.305	0.21	0.032	−0.068, 0.306	0.21
5 to < 6	−0.001	−0.116, 0.114	0.99	0.004	−0.109, 0.123	0.90	0.004	−0.108, 0.124	0.90
6 to < 7	0.044	−0.032, 0.174	0.17	0.048	−0.026, 0.180	0.14	0.048	−0.027, 0.179	0.15
7 to < 8	0.000			0.000
8 to < 9	0.010	−0.189, 0.291	0.68	0.013	−0.178, 0.302	0.61	0.012	−0.179, 0.301	0.62
≥ 9	−0.022	−0.956, 0.334	0.34	−0.022	−0.955, 0.332	0.34	-0.022	−0.957, 0.331	0.34

Abbreviations: 95%CI, 95% confidence interval.

^*BMI gain: difference from BMI followed for a year to BMI at baseline.

^†Analysis of BMI gain include all participants.

^‡Model 1: adjusted for age and BMI at baseline.

^§Model 2: adjusted for the variables in model 1 plus shift-worker, smoking, alcohol consumption, and physical activity.

^¶Model 3: adjusted for the variables in model 2 plus depressive symptoms.