| Evaluated | Missing | ||
|---|---|---|---|
| Magnetic resonance imaging | |||
| Brainstem kinking (yes/no) | 51 | 40 | 50% Yes |
| Brainstem hypoplasia (none, mild, moderate, severe, present, not assessed) | 23 | 68 | 61 % None |
| Tectal beaking (yes/no) | 83 | 8 | 99% Yes |
| Corpus callosum present (yes/no) | 90 | 1 | 98% Yes |
| Brain hemorrhages (yes/no) | 90 | 1 | 100% No |
| Nonhemorrhagic brain lesions (periventricular leukomalacia, atrophy, infarct) (yes/no) | 91 | 0 | 99% No |
| Supratentorial subarachnoid space (small, normal, large) | 90 | 1 | 99% Small |
| Syringomyelia (none, mild, severe) | 84 | 7 | 100% None |
| Tethered cord (yes/no) | 89 | 2 | 100% Yes |
| Scoliosis/kyphosis (yes/no) | 91 | 0 | 98% No |
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