Table 2 Comparison of baseline brain MRI features between Japanese and Caucasian patients with MS
| Â | Mean | Median (IQR) | Mean | Median (IQR) | p |
|---|---|---|---|---|---|
|  | Japanese patients (n = 93) | Caucasian patients (n = 72) |  | ||
Number of T2W-lesions | 62 | 50 (27–96) | 73 | 65 (24–108) | 0.08 |
T2W-lesion volumes (cm3) | 11.5 | 7.8 (2.3–16.9) | 8.0 | 5.3 (2.4–12.2) | 0.12 |
Each T2W-lesion volume (mm3) | 174 | 140 (78–224) | 118 | 85 (63–138) | < 0.0001 |
|  | Japanese patients (n = 83) | Caucasian patients (n = 233) |  | ||
NBV (cm3) | 942.6 | 954.1 (903.9–980.2) | 972.9 | 977.9 (940.4–1002.6) | < 0.0001 |
|  | Japanese patients (n = 45) | Caucasian patients (n = 148) |  | ||
NWMV (cm3) | 467.4 | 466.1 (446.5–486.1) | 486.9 | 487.7 (473.2–501.4) | < 0.0001 |
|  | Japanese patients (n = 52) | Caucasian patients (n = 165) |  | ||
NCGMV (cm3) | 441.3 | 438.3 (418.6–473.1) | 449.8 | 452.0 (429.9–471.7) | 0.08 |
|  | Japanese patients (n = 73) | Caucasian patients (n = 207) |  | ||
NDGMV (cm3) | 37.0 | 36.7 (33.3–40.6) | 40.8 | 41.4 (38.0–43.8) | < 0.0001 |
Normalized thalamic volume (cm3) | 17.2 | 17.3 (15.7–19.0) | 18.8 | 18.9 (17.6–20.2) | < 0.0001 |