Establishment of predictive models for postoperative delirium in elderly patients after knee/hip surgery based on total bilirubin concentration: machine learning algorithms. - Hua, Shuhui; Li, Chuan; Wang, Yuanlong; Liang, YiZhi; Xu, Shanling; Kong, Jian; Gong, Hongyan; Dong, Rui; Lin, Yanan; Lin, Xu; Bi, Yanlin; Wang, Bin (BMC Anesthesiology, 2025)