| | Low blood level | High blood level | | |
| Age, median (range) | 36.0 (29, 53) | 42 (27, 50) | Male, (%) | 4 (33.3) | 3 (23.1) | Relapsing-remitting MS, (%) | 7 (58.3) | 11 (84.6) | Duration of disease prior to study, median (range) | 4.0 (1.0, 5.0) | 2.0 (1.0, 7.0) | EDSS in the last year, median (range) | 3.5 (1.5, 6.5) | 3.5 (1.0, 6.0) | EDSS in the last 2 years, median (range) | 2.0 (0.0, 6.5) | 2.0 (0.0, 5.0) | Relapses in the last year, median (range) | 1.5 (0.0, 3.0) | 2.0 (0.0, 5.0) | Relapses in the last 2 years, median (range) | 2 (0.0, 5.0) | 3.0 (1.0, 7.0) | Number of diseases modifying drugs, median (range) | 1 (1, 2) | 2 (1, 3) | Mitoxantrone received prior to enrollment, (%) | 0 (0.0) | 1 (7.7) |
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