Selection of the risk predictors
Comorbidity
REGRESSION
17 risk predictors were screened by LASSO regression, including the type of coronary stent, age, Elixhauser Comorbidity Index, ventilation treatment type, use of vasoactive drugs, heart rate, systolic pressure, diastolic pressure, respiratory rate, bicarbonate, chloride, hemoglobin, platelets, PT, WBC, CKMB, and anion gap were selected as risk predictors of in-hospital mortality in patients after PCI (Fig. Use of the LASSO regression to select the variables in the training set. 