Table 2 Risk factor analysis
From: Multivariate analysis of pedicle screw invasion of the proximal facet joint after lumbar surgery
Index | B | SE | Wals | P | OR | 95% CI | |
|---|---|---|---|---|---|---|---|
Lower limit | Upper limit | ||||||
Age (≥50) | 0.829 | 0.146 | 32.266 | 0.000 | 2.291 | 1.721 | 3.049 |
BMI | 46.731 | 0.000 | |||||
BMI (24 ~ 28 kg/m2) | −0.169 | 0.179 | 0.884 | 0.347 | 0.845 | 0.595 | 1.201 |
BMI (> 28 kg/m2) | 0.935 | 0.172 | 29.733 | 0.000 | 2.548 | 1.821 | 3.567 |
Proximal facet joint angle | 66.542 | 0.000 | |||||
Proximal facet joint angle (35 ~ 45°) | 1.148 | 0.160 | 51.757 | 0.000 | 3.151 | 2.305 | 4.308 |
Proximal facet joint angle (> 45°) | 1.275 | 0.200 | 40.678 | 0.000 | 3.578 | 2.418 | 5.294 |
Degenerative lumbar spondylolisthesis (yes) | 0.783 | 0.143 | 29.919 | 0.000 | 2.187 | 1.652 | 2.895 |
Isthmic lumbar spondylolisthesis (yes) | 0.879 | 0.207 | 18.020 | 0.000 | 2.410 | 1.605 | 3.616 |
Fixed segment (lower lumbar) | 1.069 | 0.143 | 56.212 | 0.000 | 2.912 | 2.202 | 3.851 |
Constant | −3.831 | 0.311 | 151.367 | 0.000 | 0.022 | ||