Table 1.
Baseline characteristics of patients with at least 10 years of follow-up.
| Baseline clinical and demographic characteristics | n = 401 |
|---|---|
| Females: n (%) | 287 (71.6) |
| Mean (SD) age in years | 30.0 (8.1) |
| CIS topography: n (%) | |
| ON | 142 (35.4) |
| BS | 112 (27.9) |
| SC | 110 (27.4) |
| Other | 37 (9.2) |
| +OB: n (%) | 221/334 (66.2) |
| Baseline number of T2 lesions on brain and SC MRI: n (%) | |
| 0 | 80/391 (20.5) |
| 1–3 | 67/391 (17.1) |
| 4–9 | 56/391 (14.3) |
| ⩾10 | 188/391 (48.1) |
| CEL: n (%) | 97/239 (40.6) |
| Median (IQR) time of follow-up in years | 14.0 (11.9–16.7) |
SD: standard deviation; CIS: clinically isolated syndrome; ON: optic neuritis; BS: brainstem; SC: spinal cord; OB: oligoclonal bands; MRI: magnetic resonance imaging, CEL: contrast-enhancing lesions; IQR: interquartile range.