Surgical outcomes for during hours vs after hours groups.
| Outcomes | During Hours Group | After Hours Group | P Value |
| Improvement in American Spinal Injury Association, mean ± SD | 0.3 ± 0.6 | 0.3 ± 0.8 | 0.854 |
| Intensive care unit length of stay, d, mean ± SD | 4.6 ± 8.7 | 6.313 ± 12.142 | 0.272 |
| Hospital length of stay, d, mean ± SD | 13.5 ± 11.0 | 14.2 ± 16.1 | 0.724 |
| 30-day return to operating room, n (%) | 7 (14.3%) | 13 (6.8%) | 0.089 |
| 30-day readmission, n (%) | 1 (2.0%) | 12 (6.3%) | 0.244 |
| 30-day mortality, n (%) | 2 (4.1%) | 14 (7.3%) | 0.420 |