Hemoglobin to red cell distribution width ratio predicts postoperative delirium in older patients undergoing hip fracture surgery: A retrospective cohort study

HRR, American Society of Anesthesiologists physical status >2 and neutrophils could independently predict POD in older patients undergoing hip fracture surgery, and HRR had satisfactory predictive value. However, further research is needed to confirm our findings. Geriatr Gerontol Int 2025; 25: 565-571.