Clinical features of patients with optic neuritis (ON)
| ON | ON-multiple sclerosis | ||
| Age (y): | |||
| ⩽20 | 10 | 4 | |
| 21–30 | 8 | 17 | |
| 31–40 | 11 | 9 | |
| 41–50 | 9 | 3 | χ2= 8.7, 3df, p=0.07 |
| Sex: | |||
| Males | 13 | 6 | |
| Females | 25 | 27 | χ2= 1.57, 1df, p>0.10 |
| ON Type: | |||
| Single | 23 | 17 | |
| Recurrent | 11 | 13 | |
| Bilateral | 4 | 3 | χ2= 0.82, 2df, p>0.5 |
| HLA Type1-150: | |||
| DR2+ | 15 | 22 | |
| DR2− | 19 | 11 | χ2= 2.63, 1df, p>0.1 |
↵1-150 Four subjects not typed.