Table 8.
Final models from mixed model analysis of axial diffusivity values for group, age, and time of scan
| Within‐subjects effects | Between‐subjects effects | |||||
|---|---|---|---|---|---|---|
| Group × time × age | Time × age | Time × group | Time |
Group (1,31) |
Age | |
| Pathway | df (1,30) F (p) | df (1,31) F (p) | df (1,31) F (p) | df (1,31) F (p) | df (1,84) F (p) | df (1,84) F (p) |
| Superior longitudinal | ||||||
| Left | 5.86 (0.021) | 16.56 (0.001) | 1.98 (0.164) | 4.17 (0.044) | ||
| Right | ||||||
| Inferior longitudinal | ||||||
| Left | 5.36 (0.027) | 17.14 (0.001) | 0.13 (0.716) | 0.34 (0.560) | ||
| Right | ||||||
| Inferior frontal occipital | ||||||
| Left | 3.45 (0.073) | 6.47 (0.016) | 23.61 (<0.0001) | 0.09 (0.759) | 0.79 (0.378) | |
| Right | 4.98 (0.033) | |||||
| Uncinate | ||||||
| Left | 4.67 (0.038) | 20.07 (<0.0001) | 0.05 (0.825) | 0.95 (0.333) | ||
| Right | ||||||
| Cingulum | ||||||
| Left | 2.55 (0.120) | 0.84 (0.362) | 0.70 (0.404) | |||
| Right | ||||||
| Cingulum hippocampal | ||||||
| Left | 0.48 (0.493) | 0.31 (0.579) | 5.93 (0.017) | |||
| Right | ||||||
| Corticospinal | ||||||
| Left | 2.89 (0.099) | 2.29 (0.134) | 7.15 (0.009) | |||
| Right | ||||||
Note: Values in bold survived Bonferroni correction at a critical value of 0.007.