Table 4.
Mean Axial Diffusivity Valuesa for FA Clusters that Differed between Patients and Healthy Volunteers
| Brain Region | Patients N=30 |
Healthy Volunteers N=38 |
Test Statistic |
df | p value |
Effect Sizeb |
|---|---|---|---|---|---|---|
| Left Hemisphere | ||||||
| Cluster 1 | 4279.51 (262.12) |
4470.48 (290.18) |
t = −2.81 | 66 | .007 | .107 |
| Cluster 2 | 4746.60 (230.53) |
4630.00 (249.46) |
t = 1.98 | 66 | .052 | .056 |
| Right Hemisphere | ||||||
| Cluster 3 | 4324.71 (176.95) |
4244.93 (241.16) |
t = 1.52 | 66 | .134 | .034 |
| Cluster 4 | 4229.08 (149.54) |
4056.30 (207.18) |
t = 3.84 | 66 | <.001 | .183 |
Notes: Data are presented as mean +/− SD in parentheses.
a
Values are in units of µm2/s
b
Effect size = partial eta squared