ALB and acute kidney injury: Hemoglobin (per 1 g/dL increase, OR, 0.92; 95% CI: 0.87–0.98; p = 0.01), albumin (per 1 g/dL increase, OR, 0.50; 95% CI: 0.40–0.61; p < 0.01), prognostic nutritional index (PNI) (OR, 0.95; 95% CI: 0.93–0.98; p < 0.01), and laparoscopic surgery (OR, 0.62; 95% CI: 0.42–0.93; p = 0.02) showed negative associations with AKI postoperative AKI.