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| Chiari 1000 (N = 94) | Duke (N = 92) | |||
|---|---|---|---|---|
| Number | % | Number | % | |
| CTD+ | 28 | 29.79 | 53 | 57.61 |
| CTD- | 66 | 70.21 | 27 | 29.35 |
| Unknown CTD | 12 | 13.04 | ||
| EDS- | 89 | 94.68 | 87 | 94.57 |
| EDS+ | 5 | 5.32 | 5 | 5.43 |
| Syringomyelia | 14 | 14.89 | 22 | 23.91 |
| No syringomyelia | 80 | 85.11 | 70 | 76.09 |
