Table 3.

Linear regression estimates for AWC predicting myelination in AF and SLF

Region	Term	Estimate	SE	t Statistic	p Value
Left AF	(Intercept)	0.071	0.006	12.390	0.001
	AWC	0.001	0.001	0.559	0.578
	AgeGroup	0.060	0.011	5.308	0.001
	SES	−0.009	0.005	−1.710	0.091
	AWC:AgeGroup	0.001	0.001	2.323	0.023
	AWC:SES	0.001	0.001	1.121	0.266
	AgeGroup:SES	−0.008	0.011	−0.729	0.468
	AWC:AgeGroup:SES	0.001	0.001	0.811	0.420
Right AF	(Intercept)	0.074	0.005	15.769	0.001
	AWC	0.001	0.001	−0.282	0.779
	AgeGroup	0.066	0.009	6.944	0.001
	SES	−0.006	0.005	−1.441	0.154
	AWC:AgeGroup	0.001	0.001	2.108	0.038
	AWC:SES	0.001	0.001	1.680	0.097
	AgeGroup:SES	−0.013	0.009	−1.471	0.146
	AWC:AgeGroup:SES	0.001	0.001	2.059	0.043
Left SLF	(Intercept)	0.094	0.007	14.090	0.001
	AWC	0.001	0.001	−0.020	0.984
	AgeGroup	0.085	0.013	6.353	0.001
	SES	−0.007	0.006	−1.136	0.260
	AWC:AgeGroup	0.001	0.001	1.415	0.161
	AWC:SES	0.001	0.001	0.721	0.473
	AgeGroup:SES	−0.013	0.013	−1.015	0.313
	AWC:AgeGroup:SES	0.001	0.001	1.130	0.262
Right SLF	(Intercept)	0.096	0.005	17.605	0.001
	AWC	0.001	0.001	−0.312	0.756
	AgeGroup	0.081	0.011	7.472	0.001
	SES	−0.004	0.005	−0.727	0.469
	AWC:AgeGroup	0.001	0.001	2.114	0.038
	AWC:SES	0.001	0.001	1.045	0.299
	AgeGroup:SES	−0.014	0.010	−1.392	0.168
	AWC:AgeGroup:SES	0.001	0.001	2.052	0.044

Fixed effects are displayed including AWC, age group (6 or 30 months) and maternal education z score (SES). The α level is set at 0.05 (significance level p < 0.05); effects below this threshold are highlighted in bold.