A retrospective cohort study published in the International Journal of General Medicine evaluated the association between preoperative nutritional status, assessed using the Controlling Nutritional Status score, and postoperative delirium in elderly patients undergoing hip fracture surgery. Study design Participants: 2,030 patients aged ≥65 years Study period: January 2020 to December 2024 Setting: University-affiliated hospital Assessment: Preoperative Controlling Nutritional Status score Postoperative outcome: Postoperative delirium identified using medical records with reference to the Confusion Assessment Method Primary analysis: Multivariable logistic regression Additional analyses: Restricted cubic spline, propensity score matching, subgroup, and sensitivity analyses Key findings 337 patients (16.6%) developed postoperative delirium.

Restricted cubic spline analysis demonstrated a…