Summary of demographics and surgeries performed in adult spinal deformity patients.
| Demographics | N = 544 |
| Woman, % | 75.4% |
| Age, y, mean | 58.1 |
| Body mass index, mean | 28.1 |
| Charlson Comorbidity Index | 1.6 |
| Smoker, % | 7.2% |
| Previous fusion surgery, % | 37.0% |
| Surgeries performed | |
| Mean number levels fused | 11.4 |
| Approach, % | |
| Anterior | 0.5% |
| Posterior | 85.4% |
| Anterior then posterior | 13.9% |
| Three-column osteotomy | 49.4% |