Age at onset (years) | Optic nerve | Brain stem/cerebellar | Spinal cord | Cerebral/unclear | ||||
---|---|---|---|---|---|---|---|---|
Sex ratio | n | Sex ratio | N | Sex ratio | n | Sex ratio | n | |
F, female; M, male. | ||||||||
0 to 28 | 2.2 | 28F/13M | 1.6 | 21F/13M | 3.7 | 44F/12M | 1.8 | 18F/10M |
29+ | 5.2 | 31F/6M | 1.9 | 21F/11M | 1.7 | 32F/19M | 1.6 | 23F/14M |