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Distribution of the four groups in Roussouly sagittal classification
| Roussouly sagittal classification | |||||
|---|---|---|---|---|---|
| Type 1 | Type 2 | Type 3 | Type 4 | ||
| Group CNK | 2 (2.7 %) | 11 (15.1 %) | 34 (46.6 %) | 26 (35.6 %) | 73 |
| Group CK | 0 | 2 (8.3 %) | 9 (37.5 %) | 13 (54.2 %) | 24 |
| Group CMTK | 1 (5.9 %) | 4 (23.5 %) | 6 (35.3 %) | 6 (35.3 %) | 17 |
| Group CLTK | 0 | 0 | 2 (33.3 %) | 4 (66.7 %) | 6 |
| 3 | 17 | 51 | 49 | ||
Pearson χ 2 P = 0.59
