Predictors of Clavien complications with AUC amounts.
| Variable | Final AUC |
| Clavien grade II complications | 0.749 |
| American Society of Anesthesiologists score | |
| Preoperative hematocrit level | |
| Operative room time | |
| Any lumbar fusion | |
| Posterior lumbar interbody fusion | |
| Clavien grade III complications | 0.702 |
| Dialysis | |
| Time from incision open to incision close | |
| Clavien grade IV complications | 0.928 |
| Anterior decompression | |
| Any lumbar fusion | |
| Preoperative sepsis | |
| Inpatient length of stay | |
| Clavien grade V complications | 0.744 |
| Increased preoperative white blood cell count | |
| Hemiplegia and paraplegia | |
| Preoperative >10% loss body weight in past 6 mo | |
| Severe Clavien complications | 0.756 |
| Female sex | |
| Diabetes mellitus | |
| Operative time | |
| Central nervous system tumor | |
| Osteotomy | |
| Cigarette pack-years | |
| Anterior fusion | |
| Anterior lumbar interbody fusion |
Abbreviation: AUC, area under the curve.