Table 5.
Results of logistic regression analysis
| Variable | Univariate |
Multivariate |
||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p-value | OR | 95% CI | p-value | |
| Male sex | 0.73 | 0.30–1.70 | 0.465 | |||
| Age | 1.04 | 1.00–1.08 | 0.065 | |||
| ECOG | 0.70 | 0.46–1.04 | 0.075 | |||
| SINS junctional region | 1.68 | 0.72–4.05 | 0.230 | |||
| Multiple spine metastasis | 1.14 | 0.49–2.73 | 0.768 | |||
| Preoperative radiotherapy | 0.70 | 0.04–3.62 | 0.721 | |||
| Preoperative bone-modifying agent therapy | 0.37 | 0.06–1.31 | 0.135 | |||
| Multilevel lesion | 1.04 | 0.33–2.72 | 0.937 | |||
| Fixation more than 5 levels | 1.99 | 0.80–4.72 | 0.133 | |||
| Screw cement augmentation | 0.94 | 0.22–2.90 | 0.927 | |||
| Vertebral body replacement | 1.86 | 0.73–4.47 | 0.187 | |||
| Pelvic fixation | 17.9 | 4.62–70.2 | < 0.001* | 10.9 | 2.59, 45.9 | < 0.001* |
| SMII | 1.10 | 1.01–1.20 | 0.025* | 1.11 | 1.01, 1.22 | 0.042* |
| Ambulatory status after surgery | 9.36 | 0.01–16 | 0.987 | |||
| Local recurrence | 2.74 | 1.12–6.48 | 0.027* | 2.06 | 0.72, 5.79 | 0.169 |
| Survival of more than 1 year | 2.92 | 1.14–9.02 | 0.025* | 1.45 | 0.47, 5.02 | 0.528 |
| Survival of more than 5 years | 6.40 | 2.25–16.8 | < 0.001* | 3.60 | 1.09, 11.2 | 0.029* |
OR, odds ratio; CI, confidence interval; ECOG, Eastern Cooperative Oncology Group; SINS, spinal instability neoplastic score; SMII, spinal metastasis invasiveness index.
*
Significant p-value.