Table 1. The age, gender and ethnic background of patients across all categories are shown.
| ON Subtype1 | ||||
| MS related ON | NMO spectrum | ‘CRION’ pattern ON | ‘RION’ pattern ON | |
| White Caucasian ethnic background | 6 | 2 | 3 | 6 |
| Not ‘white Caucasian’ ethnic background | 6 | 8 | 7 | 2 |
| F∶M | 8∶3 | 7∶3 | 9∶1 | 5∶3 |
| Median Age in years (s.d.)2 | 32 (11) | 34 (10) | 44 (10) | 42 (13) |
A higher female: male ratio is observed in all groups. The majority of patients with NMO spectrum and ‘CRION’ pattern ON do not have a ‘white Caucasian’ ethnic background.
1
ON = optic neuritis, NMO = Neuromyelitis Optica, MS = Multiple Sclerosis, ‘CRION’ = ‘chronic relapsing inflammatory optic neuropathy’, ‘RION’ = Recurrent Isolated Optic Neuritis.
2
s.d. = standard deviation.