Fig. 2From: Preoperative prognostic nutritional index value as a predictive factor for postoperative delirium in older adult patients with hip fractures: a secondary analysisReceiver operating characteristic curve analysis of the prognostic nutritional index (PNI) and other risk factors for postoperative delirium; (A) results of PNI alone; (B) result of PNI combined with the anesthetic method and Mini-Mental State Examination score. AUC, area under the curveBack to article page