Table 6.

Linear mixed models.

Stimulus	Random intercept variance	Predictors	t	p
Word	7.4, SD =2.7	PPVT	1.5	0.13
		Age (months)	−1.4	0.14
		Total WM	−1.9	0.04
		SNR (29%/71%)	13.4	<0.0001
LP	37.9, SD =6.2	PPVT	−1.9	0.05
		Age (months)	1.5	0.14
		Total WM	−3.1	0.009
		TROG	−0.6	0.52
		SNR (29%/71%)	8.0	<0.0001
ZP	31.54, SD =5.6	PPVT	−2.1	0.03
		Age (months)	1.7	0.09
		Total WM	−3.1	0.002
		SNR (29%/71%)	10.9	<0.0001

SD =standard deviation; LP =Low predictability sentences; ZP =Zero-predictability sequences; PPVT =Peabody Picture Vocabulary Test; Total WM =composite of all AWMA subtest scores; SNR =signal-to-noise ratio; TROG =Test of Reception of Grammar; significant individual predictors are noted in bold. Predictors for standardised measures are based on raw scores.