Study participants
organ failure, CHD
DISEASES, CORONARY HEART DISEASE
Our study included all adult patients with CHD admitted to the ICU according to International Classification of Diseases (ICD) version 9 or 10 (We included all patients who contained any ICD codes related to coronary artery). The exclusion criteria were as follows (1) records of multiple ICU admissions other than the first ICU admission; (2) records of ICU stays of less than 24 hours; (3) records of repeated multiple hospitalizations; (4) exclusion of records of missing neutrophils, lymphocytes, monocytes, platelets, and RDW. Finally, a total of 7115 patients were extracted from MIMIC IV for initial analysis and model construction, and 701 patients were extracted from EICU for external validation (details shown in Flow chart of patient screening. CHD, coronary heart disease; EICU, eICU Collaborative Research Database; ICU, intensive care unit; MIMIC IV, Multi-Parameter Intelligent Monitoring in Intensive Care Database IV; SOFA, sequential organ failure assessment.