Table 4 The risk factors for any reoperation within 1 year after robot-assisted lumbar fusion based on multivariate logistic regression
Risk factors | Adjusted odds ratio | 95% Confidence interval | P value | |
|---|---|---|---|---|
Patient | ||||
Female | 1.9 | 0.4 | 8.6 | 0.424 |
Obese | 12.2 | 1.3 | 116 | 0.029 |
CCI | 1.2 | 0.6 | 2.3 | 0.578 |
Smoker | <0.01 | <0.01 | >999 | |
Preoperative diagnosis (reference = degenerative disk disease) | ||||
Degenerative scoliosis | 6.8 | 0.4 | 124 | 0.916 |
High-grade spondylolisthesis | 1.4 | 0.14 | 13.3 | 0.949 |
Pseudarthrosis | <0.01 | <0.01 | >999 | |
Spinal stenosis | 0.2 | 0 | 26.2 | 0.991 |
Other | <0.01 | <0.01 | >999 | |
Robot operative factors | ||||
Open vs. percutaneous | 0.2 | 0.01 | 6.1 | 0.347 |
Total number of robot screws | 1.2 | 0.7 | 2.2 | 0.556 |
Robot time/screw (minutes/screw) | 0.9 | 0.7 | 1.2 | 0.393 |
Other operative factors | ||||
Prior spine surgery | 1.3 | 0.1 | 14.4 | 0.856 |
Total instrumented levels | 0.5 | 0.1 | 2.7 | 0.419 |
Pelvic fixation | 153 | 1.1 | >999 | 0.045 |
Total operative time | 1 | 1 | 1 | 0.903 |
Estimated blood loss | 1 | 1 | 1 | 0.908 |
LOS | 1.2 | 0.8 | 1.8 | 0.477 |
Any robot-related complication | <0.01 | <0.01 | >999 | |