Table 2.
Associations of Oral Reading Index (ORI) and FA metrics in regions of significant associations in along-tract analyses in at least one group, demonstrating the range of Pearson’s correlations between ORI and mean FA or mean R1 of the segment of the tract and p value of the node of highest correlation in which significant associations were found, after family-wise correction.
| ORI-FA | ORI-R1 | |||||||
|---|---|---|---|---|---|---|---|---|
| FT | PT | FT | PT | |||||
|
| ||||||||
| Tract Dorsal | r-range | p-peak | r-range | p-peak | r-range | p-peak | r-range | p-peak |
| Arc-L (nodes 2-10) |
0.36-0.49 | 0.003 * | −0.14–0.14 | 0.36 | - | - | - | - |
| SLF-L (nodes 13-20) |
0.37-0.52 | 0.001 * | −0.08–0.09 | 0.56 | - | - | - | - |
| SLF-L (nodes 1-5) |
- | - | - | - | −0.05–0.04 | 0.81 | 0.41-0.43 | 0.021 * |
| SLF-R (nodes 1-22) |
0.36-0.55 | <0.001 * | −0.26–0.16 | 0.09 | - | - | - | - |
| Ventral | ||||||||
| UF-R (nodes 13-19) |
- | - | - | - | −0.17–0.14 | 0.41 | 0.37–0.49 | 0.007 * |
| ILF-L (nodes 20-23) |
- | - | - | - | −0.05–0.09 | 0.68 | 0.39–0.56 | 0.001 * |
Abbreviations: FT = full-term; PT = preterm; FA = fractional anisotropy; R1 = myelin-derived metric; ORI = Oral Reading Index; Arc = Arcuate; SLF = Superior longitudinal; UF = Uncinate; ILF = Inferior longitudinal; L = left; R = right; r range = range of correlation coefficients for the nodes meeting the threshold for within tract significance; ppeak = p value for the largest correlation coefficient within the significant nodes; bold = significant;
= False Discovery Rate-corrected for multiple comparisons.