Multivariate logistic regression*. Any major adverse event: DVT, PE, fall, fracture, additional surgery, acute renal disease, cardiac event, MI, dysrhythmia, deep surgical site infection, bleeding event requiring transfusion, pneumonia, neuropathy, and death.
| Variables | OR | 95% CI | p |
|---|---|---|---|
| SLE vs OA | 3.70 | 1.52–8.89 | 0.004 |
| Charlson-Deyo Comorbidity Index**, ≥ 1 vs 0 | 1.82 | 0.75–4.41 | 0.19 |
| Epidural block vs no | 0.87 | 0.22–3.35 | 0.84 |
↵* All models control for disease (SLE vs OA), comorbidities, and type of anesthesia.
↵** The Charlson-Deyo Comorbidity Index was calculated by excluding SLE. Significant data are in bold face. SLE: systemic lupus erythematosus; OA: osteoarthritis; DVT: deep vein thrombosis; PE: pulmonary embolus; MI: myocardial infarction.