Table 1.

The distribution of participants’ characteristics and risk factors for increased screen time across different categories of screen time use among preschool-aged children

Risk factors	Screen time				Unadjusted		Adjusted
	n	0-1 hr (%)	2 hrs (%)	3+ hrs (%)	OR*	P	OR*	P
N	379	65	137	177
Age 2-3 years	92	27.7	30.7	18.1	reference		reference
4 years	116	30.8	32.9	28.8	1.3	0.25	1.7	0.07
5-6 years	171	41.5	36.5	53.1	1.9	0.01	2.6	<0.01
Female	171	55.4	46.7	40.1	0.7	0.03	0.71	0.10
Mother works for pay	54	17.2	14.7	13.0	0.8	0.42	0.70	0.23
Father works 8+hours	221	52.3	64.2	55.9	0.9	0.78	1.22	0.35
First screen exposure 1 yr or less	59	12.9	20.4	13.0	reference		reference
1-2 years	137	32.3	33.6	40.1	1.4	0.22	1.4	0.27
3 years or later	10	54.8	46.0	46.9	1.1	0.72	0.8	0.49
Number of devices 2 or less	151	54.7	42.3	32.8	reference		reference
3 devices	107	20.3	33.6	27.1	1.5	0.09	1.6	0.05
4 or more	120	25.0	24.1	40.1	2.3	<0.01	2.9	<0.01
Daily frequency of phone requests Never	104	46.2	28.5	19.8	reference		reference
1-2 times	174	44.6	41.6	49.7	2.1	<0.01	1.5	0.25
3 or more times	101	9.2	29.9	30.5	2.8	<0.01	1.7	0.16
Mother Phone Use Never	48	29.2	11.7	7.3	reference		reference
1 hour/day	143	38.5	34.3	40.1	3.1	<0.01	2.2	0.03
2 hours/day	94	13.9	28.5	26.0	3.5	<0.01	2.2	0.03
3 or more hours/day	94	18.5	25.5	26.6	3.5	<0.01	2.2	0.04
Father Phone Use Never	18	10.8	5.8	1.7	reference		reference
1 hour/day	81	27.7	21.2	19.2	2.8	0.04	--	--
2 hours/day	63	12.3	18.3	17.0	3.9	0.01	--	--
3 or more hours/day	217	49.2	54.7	62.1	4.1	<0.01	--	--
Eats while watching TV	206	41.5	45.3	66.1	2.3	<0.01	1.8	0.01
Parents give phone to calm their child	292	58.5	79.6	81.9	2.1	<0.01	1.1	0.72

*OR represents cumulative odds ratio of being in an increased category of screen time exposure for the given conditional distribution of the covariate