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Comparison of age between SVA groups in each TK group. Lower cervical curvature measures are in between parentheses.
| Patients’ Age (Cervical curvature measure) | |||||
|---|---|---|---|---|---|
| TK < 30 | TK 30–40 | TK 40–50 | TK > 50 | P value | |
| SVA < 0 | 38.2 (+8.7°) | 43.7 (+0.9°) | 43.8 (−3.1°) | 49.9 (−10.9°) | 0.002 |
| SVA 0–50 | 52.1 (+4.0°) | 53.5 (−4.5°) | 56.0 (−9.0°) | 62.3 (−19.9°) | 0.002 |
| SVA > 50 | 68.2 (−6.2°) | 65.9 (−11.8°) | 65.1 (−16.4°) | 73.0 (−29.5°) | 0.041 |
| P value | 0.28 | 0.001 | 0.001 | 0.001 | 0.001 |
