Statistical analysis
All data in this study were analyzed by R language software (version 3.8.8), and the missing data were filled by KNN Imputer. Standard deviation (SD) or medians with interquartile ranges (IQRs) were used to describe the patient’s characteristic data. Firstly, the extracted data were randomly divided into training set and test set in accordance with 2:1, the StandardScaler was used to standardize the data, which is a preprocessing module. Secondly, Feature variables were selected from 6 organ system scores in the SOFA score for model construction. Our study used SelectFromModel [