Table 6.
Univariate and multivariate logistic regression analysis of risk factors for AKI after primary hip and knee arthroplasty
| Risk factor | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|
| Odds ratio | 95% confidence interval | p value | Odds ratio | 95% confidence interval | p value | |
| Age (years) | 1.01 | 1.00–1.02 | 0.048 | 1.01 | 0.99–1.02 | 0.368 |
| Knee arthroplasty | 1.03 | 0.76–1.38 | 0.871 | 1.23 | 0.84–1.80 | 0.278 |
| EBL (per 100 mL) | 1.03 | 1.00–1.07 | 0.087 | 1.04 | 0.99–1.09 | 0.184 |
| Intraoperative fluids (per 100 mL) | 1.02 | 1.00–1.03 | 0.056 | 1.02 | 0.99–1.04 | 0.149 |
| ASA | 1.75 | 1.33–2.29 | < 0.001 | 1.64 | 1.24–2.17 | 0.001 |
| Dual antibiotic prophylaxis | 1.71 | 1.89–2.47 | 0.003 | 1.82 | 1.25–2.64 | 0.002 |
| Preoperative kidney disease | 1.87 | 1.37–2.55 | < 0.001 | 1.81 | 1.30–2.52 | 0.001 |
AKI = acute kidney injury; EBL = estimated blood loss; ASA = American Society of Anesthesiologists.