Table 3. Univariable and multivariable linear regression analysis of ΔIHD and relevant factors.
| Variable | Univariable analysis | Multivariable analysis | |||
|---|---|---|---|---|---|
| B (standard error) | P value | B (standard error) | P value | ||
| ΔLL | 0.02 (0.01) | 0.16 | – | – | |
| ΔDVR | 2.23 (0.25) | <0.001 | 1.55 (0.27) | <0.001 | |
| Pre-Cobb angle | 0.04 (0.09) | 0.64 | – | – | |
| Pre-DWA | 1.03 (0.15) | <0.001 | 0.47 (0.15) | 0.002 | |
| Prelateral translation | 0.24 (0.11) | 0.15 | – | – | |
| Pre-DLC | −0.52 (0.54) | 0.34 | – | – | |
| Angle of upper pedicle screw | 0.18 (0.13) | 0.16 | – | – | |
| Angle of lower pedicle screw | 0.54 (0.11) | <0.001 | 0.13 (0.09) | 0.14 | |
| Horizontal position of cage | −0.03 (0.03) | 0.28 | – | – | |
Δ, postoperative value − preoperative value; IHD, intervertebral height difference; LL, lumbar lordosis; DVR, degree of vertebral rotation; Pre, preoperative; DWA, disc wedging angle; DLC, direction of lateral curve.