Table 2.

Sleep duration as a predictor of five-year change in BMI and CT-measured adipose tissue areas

Model A*	BMI(kg/m2)			SAT(cm2)			VAT(cm2)
Age:<40 y	LS Mean	Standard Error	Pairwise P-Value	LS Mean	Standard Error	Pairwise P-Value	LS Mean	Standard Error	Pairwise P-Value
≤ 5 h	2.70	0.37	<0.0001	68.21	9.79	0.0001	11.89	3.92	0.0013
6–7 h (reference)	0.91	0.14	-	26.93	4.26	-	−1.46	1.85	-
≥ 8 h	1.81	0.21	0.0004	47.54	5.93	0.0030	5.64	2.30	0.0114
Age:≥40 y
≤ 5 h	0.68	0.24	0.5018	18.20	4.97	0.1077	4.42	3.73	0.5522
6–7 h (reference)	0.49	0.15	-	8.58	3.47	-	6.90	2.09	-
≥ 8 h	0.60	0.20	0.6118	13.52	4.85	0.3999	4.85	3.03	0.5685
P-value for interaction		0.0013			0.0210			0.0093
Model B**
Age: < 40 y
≤ 5 h	2.59	0.38	<0.0001	63.79	9.60	<0.0001	12.25	3.89	0.0024
6–7 h (reference)	0.80	0.17	-	22.22	5.00	-	−0.96	2.31	-
≥8 h	1.57	0.24	0.0025	42.13	6.97	0.0046	4.70	2.59	0.0399
Age:≥ 40 y
≤ 5 h	0.73	0.24	0.3755	19.64	5.17	0.0520	3.82	3.97	0.4473
6–7 h (reference)	0.48	0.16	-	7.74	3.75	-	7.14	2.08	-
≥ 8 h	0.60	0.22	0.5854	11.98	5.68	0.4978	4.51	3.12	0.4781
P-value for interaction		0.0036			0.0397			0.0103

^*Model A adjusted for age, gender, center/race, baseline fat, and age by sleep duration interaction

^**Model B is Model A plus adjustment for smoking status, physical activity, total calories and education