. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: Int J Obes (Lond). 2014 Jan 31;38(7):944–949. doi: 10.1038/ijo.2014.18

Table 2.

Effects of Sex, Ethnicity and Sleep Duration on Body Mass Index for Participants in the National Longitudinal Study of Adolescent Health

	MODEL 1	MODEL 2	MODEL 3

Intercept	15.57^*** (0.50)	16.73^*** (0.60)	15.89^*** (0.70)
Age	0.40^*** (0.03)	0.38^*** (0.03)	0.38^*** (0.03)
Puberty
Yes [referent category is prepubescence]	0.45^*** (0.11)	0.43^*** (0.11)	0.37^*** (0.11)
Sex
Male [referent category is female]	0.32^** (0.11)	0.33^** (0.11)	2.50^*** (0.52)
Ethnicity
Black	1.11^*** (0.14)	1.08^*** (0.14)	0.33 (0.70)
Hispanic	0.74^*** (0.17)	0.74^*** (0.17)	1.42 (0.76)
Asian [referent category is White]	−1.06^*** (0.19)	−1.09^*** (0.19)	−1.45 (1.06)
Sleep Duration		−0.10^** (0.03)	−0.01 (0.05)
2-Way Interactions
*Sex by Ethnicity*
Male*Black			−1.67^*** (0.28)
Male*Hispanic			−0.37 (0.34)
Male*Asian			0.87^* (0.38)
*Sex by Sleep Duration*
Male*Sleep			−0.25^*** (0.07)
*Ethnicity by Sleep Duration*
Black*Sleep			0.21^* (0.09)
Hispanic*Sleep			−0.06 (0.10)
Asian*Sleep			−0.02 (0.13)

p<0.05

^**

p<0.01

^***

p<0.001

standard errors in parentheses