Properties of white matter tract diffusivity in children with developmental dyslexia and comorbid attention deficit/hyperactivity disorder

Table 3 ANOVA of mean FA values for tracts of interest with significant groups confirmed via Tukey–Kramer post-hoc tests

Tract	DD + ADHD (n = 22) M (SD)	DD (n = 40) M (SD)	TD (n = 20) M (SD)	F(2,79)	p	η_p²	Tukey–Kramer post-hoc tests
Fmajor	0.56 (0.05)	0.59 (0.05)	0.59 (0.04)	2.39	0.098	0.06	n/a
Fminor	0.52 (0.04)	0.53 (0.03)	0.51 (0.03)	1.26	0.290	0.03	n/a
L ILF	0.47 (0.03)	0.48 (0.03)	0.48 (0.03)	1.47	0.236	0.04	n/a
L SLFp	0.43 (0.02)	0.44 (0.03)	0.45 (0.02)	3.90	0.024	0.08	TD > DD + ADHD
L SLFt	0.43 (0.03)	0.45 (0.02)	0.46 (0.02)	6.13	0.003	0.13	TD > DD + ADHD
L UF	0.36 (0.03)	0.35 (0.06)	0.35 (0.06)	0.29	0.751	> 0.01	n/a
R ILF	0.47 (0.02)	0.48 (0.03)	0.48 (0.03)	1.51	0.228	0.04	n/a
R SLFp	0.43 (0.03)	0.44 (0.02)	0.45 (0.02)	3.33	0.041	0.08	TD > DD + ADHD
R SLFt	0.43 (0.02)	0.44 (0.02)	0.44 (0.02)	3.72	0.029	0.09	TD > DD + ADHD
R UF	0.37 (0.03)	0.38 (0.04)	0.37 (0.05)	0.13	0.879	> 0.01	n/a

M Mean, SD Standard deviation, Bolded Statistically significant values, DD Developmental dyslexia, DD + ADHD Developmental dyslexia comorbid with attention deficit/hyperactivity disorder, TD Typical developing, unimpaired readers, FA Fractional Anisotropy, L Left, R Right, Fmajor Forceps major, Fminor Forceps minor, ILF Inferior longitudinal fasciculus, SLFp Superior longitudinal fasciculus parietal bundle, SLFt Superior longitudinal fasciculus temporal bundle, UF Uncinate fasciculus

ISSN: 1866-1955