Percentage of gray matter fraction change during follow-up between the 3 groups
| NC | aMS | cMS | |
|---|---|---|---|
| Δ-GMf 1 | 0.22% 0.06% | 0.53% 0.20% | 0.51% 0.19% |
| Δ-GMf 2 (P vs Δ-GMf 1) | 0.23% 0.10% (P = 0.426) | 0.52% 0.27% (P = 0.749) | 0.51% 0.20% (P = 0.306) |
| Δ-GMf 3 (P vs Δ-GMf 2) | 0.28% 0.19% (P = 0.199) | 0.60% 0.35% (P = 0.133) | 0.60% 0.40% (P = 0.168) |
Note:—Data are reported as mean ± standard deviation (P value). Δ-GMf_1 (%) = percentage of GM fraction change between T0 and T1; Δ-GMf_2 (%) = percentage of GM fraction change between T1 and T2; Δ-GMf_3 (%) = percentage of GM fraction change between T2 and T3.