Table 4.

Main analysis. Estimates of linear regression of each adaptive behavior scaled score with screen time use, adjusted for co-viewing

	Receptive		Expressive		Personal		Interpersonal		Play and leisure
Screen time use	β coefficient (CI)	p	β coefficient (CI)	p	β coefficient (CI)	p	β coefficient (CI)	p	β coefficient (CI)	p
None	-0.743 (-2.81 to 1.32)	0.480	-0.501 (-2.63 to 1.63)	0.644	-0.753 (-2.34 to 0.84)	0.352	0.646 (-1.02 to 2.31)	0.447	-1.120 (-2.99 to 0.75)	0.240
< 1 h	ref	-	ref	-	ref	-	ref	-	ref	-
1 to 2 h	-0.893 (-1.93 to 0.15)	0.092	-0.454 (-1.53 to 0.62)	0.405	0.223 (-0.58 to 1.02)	0.584	0.268 (-0.57 to 1.11)	0.531	0.696 (-0.24 to 1.64)	0.147
2 to 3 h	-1.957 (-2.98 to -0.93)	< 0.001	-1.729 (-2.79 to -0.67)	0.001	-0.466 (-1.26 to 0.32)	0.247	-0.469 (-1.30 to 0.36)	0.267	-0.352 (-1.28 to 0.58)	0.457
3 to 4 h	-2.449 (-3.54 to -1.36)	< 0.001	-2.085 (-3.21 to -0.96)	< 0.001	-0.631 (-1.47 to 0.21)	0.139	-0.419 (-1.30 to 0.46)	0.350	-0.521 (-1.51 to 0.46)	0.299
4 to 5 h	-3.035 (-4.33 to -1.74)	< 0.001	-2.755 (-4.09 to -1.42)	< 0.001	-1.244 (-2.24 to 0.25)	0.014	-0.689 (-1.73 to 0.36)	0.196	-0.816 (-1.99 to 0.35)	0.171
More than 5 h	-3.581 (-4.60 to 2.56)	< 0.001	-3.400 (-4.45 to -2.35)	< 0.001	-1.600 (-2.38 to 0.82)	< 0.001	-1.732 (-2.55 to 0.91)	< 0.001	-1.824 (-2.75 to -0.90)	< 0.001
Co-viewing
With an adult	ref	-	ref	-	ref	-	ref	-	ref	-
With a sibling or other children	-0.497 (-1.54 to 0.54)	0.347	-0.917 (-1.99 to 0.16)	0.094	0.013 (-0.79 to 0.81)	0.974	-0.532 (-1.37 to 0.31)	0.213	0.255 (-0.68 to 1.20)	0.594
Alone	-2.893 (-4.22 to -1.56)	< 0.001	-2.231 (-3.60 to 0.86)	0.002	-2.040 (-3.06 to -1.02)	< 0.001	-2.136 (-3.21 to 1.06)	< 0.001	-2.266 (-3.47 to 1.06)	< 0.001