Table 3. Group Differences in Tract Tensor Values.

Tracts	Fractional anisotropy			Contrast against controls
	Controls	Remitted ADHD	Persistent ADHD	Fractional anisotropy								Radial diffusivity		Axial diffusivity
	Mean (SD)	Mean (SD)	Mean (SD)	Persistent vs controls: unadjusted		Persistent vs controls: adjusted		Remitted vs controls: unadjusted		Remitted vs controls: adjusted		Persistent vs controls: adjusted		Persistent vs controls: zadjusted
				Std β	d	Std β	d	Std β	d	Std β	d	Std β	d	Std β	d
L inferior fronto-occipital	0.444 (0.019)	0.443 (0.018)	0.431 (0.022)	−0.27a	0.61	−0.24	0.55	−0.03	0.07	−0.02	0.05	0.32a	0.73	0.17	0.38
R inferior fronto-occipital	0.451 (0.016)	0.450 (0.014)	0.439 (0.02)	−0.30a	0.68	−0.28a	0.63	−0.01	0.02	−0.01	0.02	0.29a	0.67	0.05	0.11
L uncincate	0.406 (0.024)	0.403 (0.025)	0.383 (0.027)	−0.37a	0.86	−0.32a	0.73	−0.05	0.11	−0.05	0.11	0.31a	0.71	0.09	0.21
R uncincate	0.400 (0.021)	0.394 (0.016)	0.384 (0.024)	−0.31a	0.72	−0.28a	0.54	−0.13	0.26	−0.13	0.27	0.29a	0.66	0.13	0.29
L corticospinal	0.421 (0.016)	0.418 (0.013)	0.411 (0.016)	−0.26a	0.60	−0.23	0.52	−0.09	0.18	−0.09	0.19	0.04	0.09	0.001	0.00
R corticospinal	0.437 (0.016)	0.433 (0.014)	0.429 (0.017)	−0.21	0.22	−0.17	0.38	−0.12	0.24	−0.11	0.24	−0.01	0.01	−0.07	0.14
L superior longitudinal	0.438 (0.016)	0.438 (0.017)	0.429 (0.02)	−0.21	0.46	−0.17	0.38	−0.004	0.01	0.01	0.01	0.29a	0.65	0.20	0.44
R superior longitudinal	0.493 (0.022)	0.494 (0.022)	0.478 (0.024)	−0.26	0.58	−0.24	0.54	0.03	0.01	0.03	0.06	0.30a	0.69	0.15	0.34
L inferior longitudinal	0.322 (0.031)	0.328 (0.033)	0.328 (0.034)	0.08	0.17	0.09	0.21	0.08	0.17	0.09	0.18	0.08	0.17	0.29a	0.66
R inferior longitudinal	0.313 (0.031)	0.311 (0.03)	0.315 (0.033)	0.02	0.05	0.06	0.13	−0.03	0.06	−0.02	0.04	0.12	0.27	0.32a	0.76
Corpus callosum	0.455 (0.015)	0.459 (0.014)	0.455 (0.017)	−0.10	0.22	−0.08	0.17	0.02	0.05	0.02	0.04	0.08	0.18	0.14	0.31

Columns 2–4 show the mean (SD) of the fractional anisotropy for each tract. The next columns give the standardized β coefficients for the planned contrasts of the persistent and remitted ADHD groups against the never-affected comparison, ‘control' group (unadjusted and adjusted) with the associated effect size (d). The final columns show radial and axial diffusivities for the persistent against the comparison group; there were no significant differences between the remitted and comparison group.

^aSurvives Bonferroni adjustment for multiple comparisons.

Results in bold indicate those surviving Bonferroni adjustment for multiple comparisons.