Atherogenic index of plasma and risk of acute kidney injury in critically ill patients: a multi-cohort study with machine learning and SHAP analysis. - Li, De-Min; Yu, Fang; Xia, Wei; Jiang, Meng-Han; Yang, Li-Juan; Yang, Hai-Ying; Yin, Sun-Jun; Wang, Ping; Meng, Rui; Cun, Shu-Hua; Yang, Han-Ni; Du, Pei-Ni; et al. (Renal Failure, 2025)