. Author manuscript; available in PMC: 2016 Jul 21.

Published in final edited form as: Int J Obes (Lond). 2013 Feb 19;37(4):552–558. doi: 10.1038/ijo.2013.4

Table 4.

Standardized Regression Coefficients of Sleep Dimensions Entered Simultaneously with Covariates

Model	Waist Circumference		Hip Circumference		Body Mass Index¹		Percent Body Fat
	β
	Univariate	Multivariate	Univariate	Multivariate	Univariate	Multivariate	Univariate	Multivariate
Sleep Duration
School Night	−0.22^***	−0.01	−0.40^***	−0.08	0.03	−0.01	−0.05	0.02
Weekend Night	−0.05	−0.04	−0.02	−0.04	−0.08	−0.09	−0.02	−0.08
Sleep Disturbances
Sleep Disturbances²	0.16^**	0.15^**	0.12^†	0.11^*	0.13^*	0.12^†	0.11	0.12^*
Sleep Quality	−0.16^**	−0.11	−0.27^***	−0.15^**	−0.13^*	−0.15^*	−0.16^*	−0.12
Sleep Patterns
School Bedtime	0.24^***	0.09	0.31^***	0.10^†	0.10	0.14^*	0.07	0.14^*
School Wake time	0.06	0.13^*	−0.06	0.06	0.15^*	0.17^**	0.10	0.16^**
Weekend Bedtime	0.25^***	0.14	0.29^***	0.15^**	0.18^**	0.20^**	0.08	0.13^*
Weekend Wake time	0.14^*	0.07	0.21^**	0.10^†	0.03	0.04	0.02	0.01
Weekend Oversleep	0.10	−0.04	0.24^***	0.01	−0.09	−0.09	0.01	−0.10
Weekend Delay	0.11	0.10	0.12^†	0.10^†	0.15^*	0.14^*	0.04	0.05
Weekend Awakening Delay	0.11	0.03	0.22^**	0.07	−0.02	−0.01	−0.01	−0.05

Note.

Body mass index in Z-score.

Children’s Sleep Habits Questionnaire. β = standardized regression coefficient. Univariate model includes each sleep variable entered singularly. Multivariate model include each sleep variable entered simultaneously with covariates (age, sex, pubertal status, physical activity, screen time, socioeconomic status). Results remained consistent while adjusting for sleep duration (data not shown). Bolded values indicate statistical significance after Bonferonni corrections (p=0.0001).

p < .05.

^**

p < .01.

^***

p < .001.

^†

p < .09.