Table 4.
Multivariate analysis including variables with p<0.20
| Variable | Coefficient | p-value | 95% Confidence interval |
|---|---|---|---|
| Pre- to postoperative changes | |||
| CVAa) | 0.45 | 0.06 | 0.93 to -0.02 |
| Cobba) | -0.01 | 0.99 | 0.96 to -0.98 |
| Pelvic tilt | -0.99 | 0.04 | -0.03 to -1.95 |
| Lateral lumbar interbody level | 5.54 | 0.29 | 15.81 to -4.73 |
| Pedicle subtraction osteotomy | -27.84 | 0.10 | 45.51 to -56.71 |
| Sex | 22.73 | 0.05 | 5.02 to -0.5 |
| R2 | 0.12 |
Boldface indicates statistical significance.
CVA, coronal vertical axis; Cobb, coronal Cobb angle.
a)
CVA and Cobb changes are absolute amounts of change. For example, if a patient tilted 5 mm on the left preoperatively, then tilted 3 mm on the right postoperatively, the CVA change is 8 mm.