Table 2.

Results from variance portion of the location-scale mixed model of adolescent sleep duration. Wave 1 AHDC youth with at least 3 sleep night reports. N = 1095 youth, n = 6276 nights.

Variable	Model 1	Model 2	Model 3	Model 4	Model 5	Model 6	Model 7
	Tau (SE)	Tau (SE)	Tau (SE)	Tau (SE)	Tau (SE)	Tau (SE)	Tau (SE)
Family Structure
Married	REF	REF	REF	REF	REF	REF	REF
Cohabitating	0.36(0.13)**	0.20(0.13)	0.20(0.13)	0.19(0.13)	0.20(0.13)	0.20(0.13)	0.21(0.13)
Single	0.28(0.09)**	0.14(0.09)	0.13(0.09)	0.12(0.09)	0.13(0.09)	0.13(0.09)	0.12(0.09)
Widowed	0.11(0.31)	-0.04(0.31)	-0.06(0.31)	-0.06(0.31)	-0.12(0.31)	-0.04(0.31)	-0.11(0.31)
Family SES
College Educated		REF	REF	REF	REF	REF	REF
No College		0.21(0.09)*	0.18(0.09)*	0.19(0.09)*	0.20(0.09)*	0.19(0.09)*	0.17(0.09)
Household Income < 30k		0.39(0.15)**	0.29(0.15)	0.33(0.15)*	0.33(0.15)*	0.36(0.15)*	0.24(0.15)
Household Income 30k-60k		0.25(0.14)	0.17(0.14)	0.22(0.14)	0.21(0.14)	0.23(0.14)	0.14(0.14)
Household Income 60k–150k		0.10(0.12)	0.07(0.12)	0.09(0.12)	0.08(0.12)	0.09(0.12)	0.06(0.12)
Household Income 150k+		REF	REF	REF	REF	REF	REF
Family Stress
Family economic hardship			0.23(0.08)**				0.18(0.09)*
Caregiver depression				0.18(0.08)*
High caregiver stress					0.26(0.08)**		0.19(0.09)*
Lack of family cohesion						0.38(0.19)	0.22(0.2)
Control Variables
School Day	-0.86(0.05)***	-0.85(0.05)***	-0.85(0.05)***	-0.86(0.05)***	-0.85(0.05)***	-0.85(0.05)***	-0.85(0.05)***
Age of Youth	0.04(0.02)	0.03(0.02)	0.03(0.02)	0.03(0.02)	0.03(0.02)	0.03(0.02)	0.03(0.02)
Male Youth	-0.07(0.07)	-0.06(0.07)	-0.07(0.07)	-0.06(0.07)	-0.06(0.07)	-0.05(0.07)	-0.06(0.07)
White Youth	REF	REF	REF	REF	REF	REF	REF
Black Youth	0.22(0.08)**	0.07(0.09)	0.07(0.09)	0.07(0.09)	0.09(0.09)	0.07(0.09)	0.08(0.09)
Hispanic Youth	0.22(0.16)	0.15(0.16)	0.16(0.16)	0.16(0.16)	0.17(0.16)	0.15(0.16)	0.17(0.16)
Other Race Youth	0.25(0.18)	0.21(0.18)	0.20(0.18)	0.20(0.18)	0.23(0.18)	0.21(0.18)	0.21(0.18)
Caregiver Age	-0.02(0.01)**	-0.01(0.01)*	-0.01(0.01)*	-0.01(0.01)*	-0.01(0.01)*	-0.01(0.01)*	-0.01(0.01)*
Male Caregiver	0.07(0.11)	0.08(0.11)	0.09(0.11)	0.08(0.11)	0.10(0.11)	0.09(0.11)	0.11(0.11)
No. Children in Household	0.02(0.03)	0.00(0.03)	-0.01(0.03)	-0.01(0.03)	-0.01(0.03)	0.00(0.03)	-0.02(0.03)
Intercept	0.99(0.37)**	0.70(0.37)	0.68(0.37)	0.46(0.38)	0.67(0.37)	0.7(0.37)	0.66(0.37)
${\omega }^2$ (random scale SD)	0.92(0.03)***	0.9(0.03)***	0.89(0.03)***	0.89(0.03)***	0.89(0.03)***	0.9(0.03)***	0.89(0.03)***

Notes: Standard errors in parentheses.

^*p<.05

^**p<.01

^***p<.001.