Table 3.
Unadjusted Outcomes (N = 5803).a
| ASA Class I | ASA Class II | ASA Class III | ASA Class IV | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Category | n | % | n | % | n | % | n | % | P Value |
| Mortality | 0 | 0.0% | 1 | 0.0% | 23 | 0.8% | 6 | 3.8% | <.0001 |
| Any complication | 27 | 17.4% | 635 | 24.8% | 1076 | 36.8% | 83 | 51.9% | <.0001 |
| LOS ≥5 days | 32 | 20.6% | 542 | 21.2% | 1013 | 34.6% | 88 | 55.0% | <.0001 |
| Wound complication | 1 | 0.6% | 40 | 1.6% | 94 | 3.2% | 7 | 4.4% | .0005 |
| Pulmonary complication | 1 | 0.6% | 37 | 1.4% | 99 | 3.4% | 19 | 11.9% | <.0001 |
| Venous thromboembolism | 2 | 1.3% | 43 | 1.7% | 53 | 1.8% | 7 | 4.4% | .1682 |
| Renal complication | 1 | 0.6% | 16 | 0.6% | 40 | 1.4% | 1 | 0.6% | .0891 |
| Urinary tract infection | 1 | 0.6% | 37 | 1.4% | 80 | 2.7% | 5 | 3.1% | .0095 |
| Peripheral nerve injury | 0 | 0.0% | 0 | 0.0% | 5 | 0.2% | 1 | 0.6% | .0806 |
| Cardiac complication | 0 | 0.0% | 6 | 0.2% | 26 | 0.9% | 7 | 4.4% | <.0001 |
| Intra-/postoperative RBC transfusion | 24 | 15.5% | 557 | 21.7% | 928 | 31.7% | 66 | 41.3% | <.0001 |
| Sepsis | 0 | 0.0% | 23 | 0.9% | 69 | 2.4% | 10 | 6.3% | <.0001 |
| CNS complication | 0 | 0.0% | 5 | 0.2% | 6 | 0.2% | 1 | 0.6% | .7909 |
| Reoperation (related to initial procedure) | 1 | 0.7% | 69 | 2.9% | 134 | 4.9% | 14 | 9.6% | <.0001 |
| Unplanned readmission (related to initial procedure) | 5 | 3.5% | 98 | 4.2% | 211 | 7.8% | 18 | 12.3% | <.0001 |
Abbreviations: ASA, American Society for Anesthesiologists; LOS, length of stay; RBC, red blood cell; CNS, central nervous system.
aBolded values indicate statistical significance.