Through this method, 17 variables with the highest explanatory power for the research objective were ultimately selected, including: Gender, ICU admission, Hypertension disease, ILD, BMI, Braden score, mMRC score, Padua score, Carboxyhemoglobin, Arterial hematocrit, Lymphocytes percentage, Hemoglobin, GGT, Albumin, Cholinesterase, Urea nitrogen, LDH. This evidence concerns the gene ALB and hypertensive disorder.