Based on the 23 non-zero coefficients corresponding to lambda.min (Supplementary Table S2), we identified predictors including age, hypertension, smoking, drinking, Glasgow Coma Scale (GCS), body temperature, systolic blood pressure, glucose, uric acid, albumin, white blood cells, hemoglobin, lymphocyte-to-monocyte ratio (LMR), platelet-to-lymphocyte ratio (PLR), activated partial thromboplastin time (APTT), thrombin time (TT), D-dimer, tracheotomy, hematoma location, hematoma volume, midline shift, ultra early hematoma growth (uHG), and surgical treatment. Here, ALB is linked to hematoma.