Table 3.

Linear regression for variables predicting toddlers’ ASD symptoms severity.

Dependent Variable		Independent Variable	R2	SE b	β	F
Autism Symptoms Severity		Foreground screen time	0.15	0.18	0.38	11.26 ***
		Background screen time	0.09	0.19	0.29	6.18 *
		Total screen time	0.17	0.11	0.41	13.26 ***
		Interaction duration	0.17	0.22	−0.42	13.99 ****
Repetitive behaviors	Stereotyped behaviors	Foreground screen time	0.04	0.15	0.21	2.15
		Background screen time	0.07	0.16	0.26	3.38
		Total screen time	0.09	0.10	0.29	4.32 *
		Interaction duration	0.17	0.29	−0.41	9.13 **
	Self-injurious behaviors	Foreground screen time	0.04	0.15	0.20	2.14
		Background screen time	0.05	0.16	0.22	2.70
		Total screen time	0.07	0.09	0.26	3.85
		Interaction duration	0.09	0.23	−0.29	5.06 *
	Ritualistic behaviors	Foreground screen time	0.06	0.17	0.24	3.28
		Background screen time	0.09	0.18	0.30	5.13 *
		Total screen time	0.11	0.10	0.33	6.60 **
		Interaction duration	0.05	0.29	−0.23	2.91
	Sameness behaviors	Foreground screen time	0.12	0.12	0.35	7.20 *
		Background screen time	0.17	0.12	0.41	11.05 **
		Total screen time	0.22	0.07	0.47	14.62 ***
		Interaction duration	0.09	0.26	−0.30	5.13 *
	Restricted behaviors	Foreground screen time	0.09	0.17	0.30	4.43 *
		Background screen time	0.08	0.18	0.28	3.64
		Total screen time	0.13	0.11	0.36	6.76 *
		Interaction duration	0.08	0.38	−0.28	3.82
	Compulsive behaviors	Foreground screen time	0.02	0.15	0.15	1.21
		Background screen time	0.06	0.16	0.25	3.33
		Total screen time	0.06	0.09	0.24	3.18
		Interaction duration	0.08	0.24	−0.28	4.17 *
	RBS-R total score	Foreground screen time	0.03	0.65	0.16	1.19
		Background screen time	0.08	0.65	0.29	4
		Total screen time	0.08	0.40	0.28	3.82
		Interaction duration	0.13	1.35	−0.36	6.42 *

Abbreviations: * p  ≤  0.05, ** p  <  0.01, *** p  ≤  0.001, **** p  ≤  0.0001.