Table 4.

Tests of group differences axial and radial diffusivity between 39 children with CD and 53 children with no symptoms of CD within genders and race-ethnic categories.

Measure	Contrast	Region	MNI coordinates			Cluster size	Peak t	TFCE-corrected p	Cohen’s d
			x	y	z
Axial diffusivity
	CD-HC in Females
		Left superior corona radiata	−16	7	33	6654	3.76	0.016	1.25
		Right superior longitudinal fasciculus	19	−1	46	1487	3.29	0.038	1.10
		Left corticospinal tract	−8	−24	−28	400	3.81	0.039	1.27
		Right forceps major	22	−63	35	115	3.81	0.049	1.27
		Left anterior thalamic radiation	−13	−26	0	81	3.45	0.047	1.15
		Right anterior thalamic radiation	33	26	20	34	2.53	0.049	0.84
		Left cingulum	−15	−47	27	7	3.06	0.050	1.02
		Left corticospinal tract	−22	−21	−4	3	3.02	0.050	1.01
	CD-HC in African Americans
		Body of corpus callosum	−9	−12	28	27049	3.48	0.015	1.45
		L superior longitudinal fasciculus	−32	−13	49	217	3.11	0.015	1.30
Radial diffusivity
	CD-HC
		Cerebellum (vermis)	−12	−57	−47	55357	2.67	0.013	0.62
	CD-HC in Females
		Cerebellum (vermis)	−14	−56	−40	69731	4.83	0.015	1.61
	CD-HC in African Americans
		Cerebellum (vermis)	−8	−41	−38	70836	3.05	0.003	1.27

CD: CD group (three or more symptoms of CD); HC: Healthy control group (zero symptoms of CD); TFCE = threshold-free cluster enhancement; all reported effects significant at FWE p < .05.