Scheduled group compared with decompensated group — postoperative outcomes
| Outcome | Scheduled group | Decompensated group | p value |
|---|---|---|---|
| Adverse events per patients, mean ± SD | 0.3 ± 0.7 | 0.6 ± 0.9 | < 0.001 |
| Risk of having any adverse events adjusted for age and diagnosis, OR (95% CI) | 1.00 (Ref.) | 2.86 (1.69–4.84) | < 0.001 |
| Adverse events, no. (%) | |||
| Surgical site infections | 12/1633 (0.7) | 4/69 (5.8) | 0.003 |
| Systemic infections including urinary tract infections | 104/1647 (6.3) | 13/69 (18.8) | 0.001 |
| Neuropathic pain | 203/1647 (12.3) | 11/69 (15.9) | 0.46 |
| Delirium | 115/1647 (7.0) | 7/69 (10.1) | 0.33 |
| Dural tear | 198/1610 (12.3) | 10/64 (15.6) | 0.44 |
| Pneumonia | 24/1647 (1.5) | 6/69 (8.7) | 0.001 |
| Dysphagia | 18/1647 (1.1) | 1/69 (1.5) | > 0.99 |
| Deep vein thrombosis | 0/263 (0.0) | 0/20 (0.0) | NA |
| Pulmonary embolism | 5/263 (1.9) | 0/20 (0.0) | > 0.99 |
| Neurologic deterioration | 15/263 (5.7) | 1/20 (5.0) | > 0.99 |
| Cord injury | 0/226 (0.0) | 0/15 (0.0) | NA |
| Nerve root injury | 3/226 (1.3) | 0/15 (0.0) | > 0.99 |
| CSF leak meningocele | 4/263 (1.5) | 0/20 (0.0) | > 0.99 |
| Hematoma | 6/263 (2.3) | 0/20 (0.0) | > 0.99 |
| Wound dehiscence | 6/263 (2.3) | 1/20 (5.0) | 0.40 |
| Hardware malposition | 28/226 (12.4) | 0/15 (0.0) | > 0.99 |
| Massive blood loss or transfusion | 12/226 (5.3) | 1/15 (6.7) | > 0.99 |
CI = confidence interval; CSF = cerebrospinal fluid; NA = not applicable; OR = odds ratio; Ref. = reference; SD = standard deviation.
Differing denominators indicates missing data for some patients in some categories.