Early prediction of sepsis associated encephalopathy in elderly ICU patients using machine learning models: a retrospective study based on the MIMIC-IV database - Han, Yupeng; Xie, Xiyuan; Qiu, Jiapeng; Tang, Yijie; Song, Zhiwei; Li, Wangyu; Wu, Xiaodan (Frontiers in Cellular and Infection Microbiology, 2025)