Table 3.

Associations between screen activities and sleep variables (N=2865).

Predictor		Outcome Problems falling asleep (0-7 day)				Outcome Problems staying asleep (0-7 day)				Outcome School day sleep duration (hours)
Equation number		1	2	3	4	5	6	7	8	9	10	11	12
Screen Activities: Messaging		.019^*				.023^**				−.05^***
	Web-Surfing		.105^***				.078^**				−.038^**
	TV			.084^***				.094^***				−.027^**
	Game				.073^***				−.054^***				−.029^***
Child characteristics
Adolescent age (month)		.004	.005	.005	.006	.005	.004	.006	.006	−.004	−.005	−.005	−.005
	Female (RF)	---	---	---	---	---	---	---	---	---	---	---	---
Gender	Male	−.48^***	−.47^***	−.48^***	−.56^***	−.38^***	−.37^***	−.39^***	−.45^***	.11^*	.14^**	.15^** .	18^***
	White (RF)	---	---	---	---	---	---	---	---	---	---	---	---
Ethnicity	Black	−.48^***	−.48^***	−.52^***	−.47^***	−.20	−.18	−.25^*	−.18	−.24^***	−.28^***	−.26^***	−.29^***
	Hispanic/Latino	−.35^**	−.35^**	−.38^***	−.36^**	−.32^**	−.31^**	−.34^**	−.31^**	.05	.05	.07	.05
	Others & Multiracial	−.05	−.06	−.12	−.12	−.10	−.13	−.18	−.13	−.11	−.11	−.09	−.11
Household and caregiver characteristics
PCG Education	< High school (RF)	---	---	---	---	---	---	---	---	---	---	---	---
PCG Education	High school	−.11	−.12	−.12	−.12	−.01	.004	.003	−.001	−.001	.01	−.001	.013
	Some college	−.11	−.09	−.18	−.08	−.001	.032	−.04	.03	−.10	−.11	−.11	−.10
	College or +	−.03	−.03	−.03	−.01	−.17	−.16	−.16	−.15	−.16	−.15	−.15	−.14
Ratio of household income to poverty threshold	< 49% (RF)	---	---	---	---	---	---	---	---	---	---	---	---
	50-99%	−.06	−.06	−.05	−.04	−.05	−.06	−.05	−.04	−. 23^**	−.24^**	−.24^**	−.24^**
	100-199%	−.04	−.01	−.02	−.01	−.003	−.01	−.001	.005	−.24^**	−.26^***	−.27^***	−.27^**
	200-299%	.02	.05	.01	.05	−.12	−.12	−.09	−.12	−.29^***	−.31^***	−.33^***	−.32^***
	300% or +	−.33^*	−.30^*	−.29^*	−.29^*	−.34^**	−.36^*	−.34^**	−.35^*	−.30^***	−.31^***	−.31^***	−.32^***
Family structure	Both biological parents (RF)	---	---	---	---	---	---	---	---	---	---	---	---
	Biological mom with new partner	.27^**	.28^*	.28^*	.29^**	.20	.22^*	.20	.22^*	−.002	.07	−.01	.07
	Biological mom only	.18	.19	.18	.19	.03	.05	.05	.06	.06	.07	.03	.07
	Biological dad with new partner	.46^*	.48^*	.49^*	.46^*	.11	.13	.14	.14	.003	.14	−.04	.13
	Biological dad only	.02	.10	.03	.01	−.35	−.33	−.37	−.32	−.05	.15	.05	.15
	Other PCG	.005	.054	.03	.05	−.09	−.04	−.07	−.04	.19	.12	.15	.12
	Adjusted R²	.021	.027	.028	.027	.02	.022	.029	.022	.044	.022	.022	.023
	F	4.38^***	5.40^***	5.49^***	5.32^***	4.24^***	4.64^***	5.67^***	4.58^***	8.23^***	4.65^***	4.58^***	4.75^***

Note. B=Unstandardized Coefficients (for ordinary least squares [OLS] regression). RF=Reference group.

p<.05,

^**

p<.01,

^***

p<.001.

95% Confidence Interval available upon request.