Table 6 Characteristics of the maxVB = 0, maxVB (2–8) and maxVB (9–17) groups adjusted for the confounding factor of postoperative back pain score
Characteristic | Beta | 95% CI | p value |
|---|---|---|---|
maxVB | Â | Â | Â |
maxVB = 0 | — | — |  |
maxVB (2–8) | 1 | 0.49–1.6 | < 0.001** |
maxVB (9–17) | 0.78 | -0.19–1.7 | 0.1 |
Age | 0.01 | -0.017–0.037 | 0.5 |
Sex | -0.29 | -0.87–0.28 | 0.3 |
Fracture types | Â | Â | Â |
A1 | — | — |  |
A3 | -0.4 | -1.6–0.77 | 0.5 |
A4 | -0.43 | -1.6–0.71 | 0.5 |
B1 | -1.9 | -4.1–0.3 | 0.09 |
B3 | -0.36 | -1.7–1 | 0.6 |
Smoking history | 0.086 | -0.44–0.62 | 0.8 |
DM history | -0.78 | -1.5–-0.04 | 0.4 |
Femur proximal BMD (g/cm2) | 0.14 | -3.3–3.6 | 0.9 |
Osteoporosis drugs | Â | Â | Â |
None | — | — |  |
Bone formation stimulants | -0.32 | -0.88–0.25 | 0.3 |
Bone resorption inhibitors | -0.24 | -1–0.56 | 0.6 |
Others | 0.64 | -0.57–1.9 | 0.3 |
Surgical techniques | Â | Â | Â |
Unilateral side screw fixation | — | — |  |
Pedicle screw | 0.84 | 0.2–1.5 | 0.011* |
Number of fixed vertebrae | -0.27 | -0.47–-0.062 | 0.012* |
Materials used for anterior props | Â | Â | Â |
Iliac bone | — | — |  |
Expandable cage | -0.25 | -0.98–0.48 | 0.5 |