Manuscript data: Tables and figures

A total of 405 critically ill DKD patients in the ICU were included in this study, of whom 88 patients experienced 90-day in-hospital mortality. The results indicated that admission age, red blood cell distribution width (RDW), and delirium were predictors of 90-day in-hospital mortality. Multivariable logistic regression showed that all variables were statistically significant. A forest plot visualized the effect estimates and 95% confidence intervals for each predictor. The model achieved a C-index of 0.891. The AUC values for the training and validation sets were 0.825 (95% CI: 0.764 - 0.887) and 0.782 (95% CI: 0.609 - 0.824), respectively. Calibration curves demonstrated good predictive consistency, and DCA confirmed the significant clinical value of the model.