Table 5.

Fourteen-month language score in relation to 6-month media exposure, moderated by presence of media verbal interactions^a

Area of language assessed	Predictor variable 1: 6-month media verbal interactions	Predictor variable 2: 6-month media exposure	N	Outcome variable: 14-month language score (Mean [S.D.])	Mean (S.E.) difference in language score for media 460 min with and without media verbal interactions present (unadjusted)	Test for whether association between 6-month media exposure and 14-month language is moderated by media verbal interactions
						Model 1 β (S.E.) [R2]	Model 2 β (S.E.) [R2]	Model 3 β(S.E.) [R2]
Total language	Interactions absent	<60 min	17	101.8 (11.6)	−6.9 (2.3)**	−0.30 (0.17)[0.06]t	−0.35 (0.18)[0.17]*	−0.40 (0.17)[0.22]*
		≥60 min	137	94.9 (8.7)
	Interactions present	<60 min	14	99.5 (6.6)	−1.5 (2.1)
		≥60 min	85	98.0 (7.5)
Receptive language	Interactions absent	<60 min	17	97.5 (14.5)	−8.7 (2.4)***	−0.36 (0.18)[0.06]*	−0.41 (0.18)[0.16]*	−0.44 (0.17)[0.19]*
		≥60 min	137	88.9 (8.5)
	Interactions present	<60 min	14	92.8 (6.5)	−1.7 (2.3)
		≥60 min	85	91.1 (8.3)
Expressive language	Interactions absent	<60 min	17	105.3 (7.1)	−3.6 (2.4)	−0.13 (0.18)[0.04]	−0.17 (0.18)[0.11]	−0.22 (0.18)[0.17]
		≥60 min	137	101.7 (10.0)
	Interactions present	<60 min	14	106.1 (9.8)	−1.1 (2.4)
		≥60 min	85	105.0 (9.1)

^*p<0.05;

^**p<0.01;

^***p<0.001;

^tp<0.10.

^aSee statistical analysis section for Model definitions.