Clinical and demographic details in age groups under 40 at onset of multiple sclerosis (MS)
| Clinical/demographic details | Age of onset <20 | Age of onset 20–29 | Age of onset 30–39 |
|---|---|---|---|
| No of patients | 29 | 98 | 74 |
| Women (n (%)) | 24 (82.8) | 68 (69.4) | 52 (70.3) |
| Men (n (%)) | 5 (17.2) | 30 (30.6) | 22 (29.7) |
| Age at assessment (mean (SD)) | 35.6 (11.3) | 46.5 (12.5) | 50.2 (9.8) |
| Age at onset (mean (SD)) | 16.6 (2.2) | 24.9 (2.6) | 34.2 (3.3) |
| Disease duration (mean (SD)) | 19.1 (11.3) | 21.7 (12.4) | 16.1 (9.5) |
| Mean EDSS | 4.6 | 4.8 | 4.5 |
| Median EDSS | 5.0 | 5.5 | 5.0 |
| Following benign course (n (%)) | 7 (33.3) | 16 (21.1) | 12 (23.1) |
| Following progressive course from onset (n (%)) | 1 (3.4) | 5 (5.1) | 7 (9.5) |