Fig. 2

Variable importance for the random forest model (RFM). SZB, kidney disease; SJB, neurological disease; ICU, ICU admission; ALB_level, albumin level; Cr_level, creatinine level; Ne_level, neutrophil level; CVC, central venous catheter; UC, urinary catheter; IV, invasive ventilation; DXM, dexamethasone