Table 4.

Distribution of parent involvement and rules included in the latent class analysis in the 2-class model (N=3981).

Variable		Class 1 (n=2501; %)	Class 2 (n=1480; %)	P value
Household media rules: parent-reported
	My house has no rules or boundaries for media use.	9.1	13.4 a	<.001
	My house has rules about what social media profiles are acceptable.	67.3	53.02	<.001
	My house has rules about what privacy settings should be set for social media.	60.4	44.9	<.001
	My house has rules about “friending” someone who is unknown offline.	67.9	43.7	<.001
	My house has rules about “screen-free zones” (rooms or places in the house, such as a bedroom) where no one is allowed to use screens, including televisions, computers, and smartphones.	25.3	24.9	.84
	My house has rules about screen-free times (times when no one is allowed to use media, such as dinnertime) when no one is allowed to use screens, including televisions, computers, and smartphones.	45.5	25.9	<.001
	My house has rules about viewing screens around bedtime.	43.1	20.8	<.001
Parent social media checking frequency					<.001
	Once a day or more	78.2	92.8
	A few times a week	11.5	4.5
	Less than once a week	10.2	2.7
Parent social media posting frequency					<.001
	Once a day or more	24.6	61
	A few times a week	31.8	21.3
	Less than once a week	43.6	17.7
Internet time rules: adolescent-reported					<.001
	Strict internet time rules	54.4	62.9
	Not strict internet time rules	45.6	37.1
Internet content rules: adolescent-reported					<.001
	Strict internet content rules	66.2	27.2
	Not strict internet content rules	33.8	72.8
Communication about internet: adolescent-reported					<.001
	High-quality communication about the internet	74.5	47.6
	Low-quality communication about the internet	25.5	52.4
Parent-adolescent relationship: adolescent-reported					<.001
	More positive parent-adolescent relationship	77.8	25.3
	Less positive parent-adolescent relationship	22.2	74.7

^aItalicization denotes the class with the majority percentage for each measure.