Figure 2.

Building procedure for the proposed risk stratification algorithms. The following features were finally selected for model building: age, gender, length of stay in intensive care unit (ICU) (los_icu), weight, height, body mass index (BMI), diabetes, heart-related diseases, lung-related diseases, no comorbidity, has two diseases, more than three diseases, hypertension, Simplified Acute Physiology Score II (SAPS II). The follow features were collected within 24 h after ICU admission: albumin serum (ALB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), white blood cell (WBC), platelet count (PLT), neutrophil (NEUT), lymphocyte (LY), serum total bilirubin (TBIL), serum creatinine (SCr), blood urea nitrogen (BUN), red blood cell (RBC), hemoglobin (HBG), hematocrit (HCT), activated partial thromboplastin time (PTT), prothrombin time (PT), international normalized ratio (INR), neutrophils/lymphocyte ratio (NLR), platelet/lymphocyte ratio (PLR), PCO₂, PO₂, temperature, respirate, mean blood pressure (MEANBP), heart rate, glucose, SpO₂, diastolic blood pressure (DIASBP), CO₂, chloride (CL), lactate, sodium, plasma cells, mechanic ventilation (MV), min Glasgow coma scale (MINGCS), specimen.