previous prediction models such as STS-NCD score and EuroSCORE are based on data from Western populations [ 7 , 9 ], and there may be significant differences in disease features, therapeutic strategies and surgical techniques in different regions [ 7 ].
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An In-Hospital Mortality Risk Model for Elderly Patients Undergoing Cardiac Valvular Surgery Based on LASSO-Logistic Regression and Machine Learning.
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