Using LASSO regression, the nine admission and interventional variables with statistical significance (hypertension, anterior myocardial infarction, culprit vessel, proximal occlusion, CRP > 3.85 mg/L, white blood cell count, neutrophil cell count, lymphocyte count, neutrophil/lymphocyte ratio > 2.17, etc.)were subjected to dimensionality reduction processing to screen out further the characteristic variables of STR < 70% risk. Here, CRP is linked to Hypertension.