Fig 5. Variable ranking of the XGBoost experiments.

A higher variable importance in XGBoost as based on the SHAP results is represented by a larger size and darker color of the rectangle. (ALP, alkaline phosphatase; ALT, alanine transaminase; BUN, blood urea nitrogen; DBP, diastolic blood pressure; FiO₂, fraction of inspired oxygen; GCS, Glasgow Coma Scale; MAP, mean arterial pressure; MBP, mean blood pressure; MV, mechanical ventilation; PaCO₂, partial pressure of carbon dioxide; PEEP, positive end-expiratory pressure; PIP, peak inspiratory pressure; PTT, partial thromboplastin time; SaO₂, oxygen saturation; SBP, systolic blood pressure).