Table 4.
Baseline characteristics of participants classified by the presence or absence of ossification
| Number | T-OALL | ONL | DISH | ||||||
|---|---|---|---|---|---|---|---|---|---|
| +(n = 383) | -(n = 1617) | p | +(n = 630) | -(n = 1370) | p | +(n = 77) | -(n = 1923) | p | |
| Age(y) | 55.2 ± 9.6 | 46.9 ± 9.3 | < 0.001 | 51.7 ± 9.2 | 47.0 ± 9.8 | < 0.001 | 58.7 ± 9.4 | 48.1 ± 9.7 | < 0.001 |
| Height(cm) | 167.7 ± 7.6 | 167.3 ± 7.9 | 0.356 | 169.2 ± 7.0 | 166.6 ± 8.1 | < 0.001 | 167.7 ± 7.5 | 167.4 ± 7.9 | 0.753 |
| Weight(kg) | 72.1 ± 11.7 | 68.0 ± 12.7 | < 0.001 | 73.1 ± 11.8 | 66.7 ± 12.5 | < 0.001 | 73.7 ± 13.5 | 68.6 ± 12.5 | 0.003 |
| BMI(kg/m2) | 25.5 ± 3.1 | 24.1 ± 3.3 | < 0.001 | 25.4 ± 3.2 | 23.9 ± 3.3 | < 0.001 | 26.1 ± 3.7 | 24.3 ± 3.3 | < 0.001 |
| CL(°) | 8.9 ± 7.4 | 7.6 ± 5.9 | 0.002 | 7.8 ± 6.2 | 7.9 ± 6.2 | 0.879 | 10.9 ± 8.4 | 7.7 ± 6.1 | 0.001 |
| TK(°) | 22.2 ± 9.6 | 17.4 ± 6.9 | < 0.001 | 19.2 ± 8.0 | 17.9 ± 7.5 | < 0.001 | 24.4 ± 9.6 | 18.1 ± 7.5 | < 0.001 |
| LL(°) | 43.4 ± 10.4 | 40.0 ± 10.4 | < 0.001 | 40.3 ± 10.6 | 40.8 ± 10.5 | 0.399 | 43.5 ± 9.9 | 40.5 ± 10.5 | 0.013 |
| SS(°) | 38.2 ± 7.4 | 36.8 ± 11.1 | 0.027 | 36.6 ± 7.3 | 37.3 ± 11.7 | 0.148 | 37.9 ± 7.1 | 37.1 ± 10.6 | 0.511 |
| SVA(cm) | 2.12 ± 1.30 | 1.81 ± 2.10 | 0.006 | 2.07 ± 2.61 | 1.78 ± 1.59 | 0.002 | 2.38 ± 1.4 | 1.85 ± 1.99 | 0.022 |
BMI body mass index, CL cervical lordosis, TK thoracic kyphosis, LL lumbar lordosis, SS sacral slope, SVA sagittal vertical axis, T thoracic, OALL ossification of the anterior longitudinal ligament, ONL ossification of the nuchal ligament, DISH diffuse idiopathic skeletal hyperostosis