TABLE 4.

Hierarchical multiple regression predicting screen time and MVPA

	Screen time (n = 136)			MVPA (n = 124)
	B	R 2	ΔR2	B	R 2	ΔR2
Step 1		.212***			.542***
Group	.16			−.39***
Age	.42***			−.58***
Sex	−.03			−.19**
Mothers’ education
Intermediate	.06			−.00
Higher	.17			.03
Fathers’ education
Intermediate	.01			−.02
Higher	−.21*			.13
Parents live together	.02			.09
Step 2		.248***	.036		.579***	.037
Group	.10			−.34***
Age	.29*			−.57***
Sex	−.02			−.19**
Mothers’ education
Intermediate	.06			.01
Higher	.15			.05
Fathers’ education
Intermediate	.02			−.04
Higher	−.18			.11
Parents live together	.02			.09
Mid-sleep timea	.26*			−.23*
Sleep durationa	.08			−.19*
Social jetlag	.05			.03
Sleep problems	−.03			.04
Step 3		.290***	.042		.617***	.038*
Group	.03			−.38***
Age	.18			−.57***
Sex	−.02			−.18**
Mothers’ education
Intermediate	.06			.02
Higher	.17			.06
Fathers’ education
Intermediate	.01			−.03
Higher	−.19			.11
Parents live together	.03			.07
Mid-sleep time	.32			−.32*
Sleep duration	−.12			−.30*
Social jetlag	−.16			.23*
Sleep problems	−.22			−.04
Group × mid-sleep time	.03			.17
Group × sleep duration	.18			20
Group × social jetlag	.26			−.28*
Group × sleep problems	.26			.11

Note: Group is coded normal weight = 0 and obese = 1. Sex is coded 0 = male and 1 = female. Parents living together is coded 0 = no and 1 = yes. Lower education is the base category.

Abbreviation: MVPA, moderate-to-vigorous physical activity.

^aSeven day averages are used for sleep duration and mid-sleep time.

^*P < .05.

^**P < .01.

^***P < .001.