Table 5.
Results of ANOVA analyses for group comparisons of individual tract FA profiles for children with high non-verbal IQ standard scores (Group 1) and children with low non-verbal IQ standard scores (Group 2).
| Tract | Main Effect of Group | Group by Location Interaction | ||
|---|---|---|---|---|
| F | p | F | p | |
| Arc-L | 0.808 | 0.78 | 1.44 | 0.21 |
| aSLF-L | 0.15 | 0.70 | 1.53 | 0.20 |
| aSLF-R | 1.33 | 0.26 | 1.21 | 0.31 |
| pSLF-L | 2.87 | 0.10 | 0.99 | 0.41 |
| pSLF-R | 5.92* | 0.02 | 0.45 | 0.74 |
| UF-L | 0.72 | 0.40 | 0.12 | 0.98 |
| UF-R | 0.00 | 0.97 | 0.15 | 0.95 |
| CST-L | 0.59 | 0.45 | 0.96 | 0.42 |
| CST-R | 0.09 | 0.76 | 0.48 | 0.76 |
| ILF-L | 0.07 | 0.79 | 1.59 | 0.15 |
| ILF-R | 1.27 | 0.27 | 0.83 | 0.56 |
| CC-Tempa | −1.01 | 0.32 | n/a | |
| CC-Occa | 0.56 | 0.58 | n/a | |
*
significant p<0.05, uncorrected
+ trend for significance p<0.1
a
Mean FA compared with an independent samples t-test
FA = fractional anisotropy; CI = confidence interval; Arc = arcuate fasciculus; aSLF = anterior superior longitudinal fasciculus; pSLF = posterior superior longitudinal fasciculus; UF = uncinate fasciculus; CST = corticospinal tract; ILF = inferior longitudinal fasciculus; CC-Occ = occipital segment of the corpus callosum; CC-Temp = temporal segment of the corpus callosum; L = left; R = right.