Results
MODS, death, SD, Comorbidity, Organ Dysfunction, oliguria
REGRESSION, MODS, DYSFUNCTION, OLIGURIA
During the study period, 1,342 patients underwent ECMO. The mean age was 53.5 years (SD 15.7), and 71.5% were male. It was found that VA mode (83.4%) was used in most cardiovascular cases (80.6%) and VV mode in most of the remaining cases (Additional file Demographic data of the 1342 patients receiving ECMO, description of variables with valid dataCharlson: Charlson Comorbidity Index, APACHE: Acute Physiologic Assessment and Chronic Health Evaluation II Scoring System, SOFA: Sequential Organ Failure Assessment Score, LODS: Logistic Organ Dysfunction System, MODS: Multiple Organ Dysfunction, SAPS3: Simplified Acute Physiology Score III, SAVE: The Survival After Veno-arterial ECMO ScoreDemographic data of the 1342 patients receiving ECMO, description of categorical data using missing values as a distinct levelCharlson: Charlson Comorbidity Index, APACHE: Acute Physiologic Assessment and Chronic Health Evaluation II Scoring System, SOFA: Sequential Organ Failure Assessment Score, LODS: Logistic Organ Dysfunction System, MODS: Multiple Organ Dysfunction, SAPS3: Simplified Acute Physiology Score III, SAVE: The Survival After Veno-arterial ECMO Score. Outcome: the number and percentage of survival to discharge and in-hospital deathUnder different partitions, RF and LR showed different discriminatory power (DP) in terms of area under the ROC curve. For partition 2, which used 934 cases for training, the training DP was 1.00 for RF and 0.80 for LR (Additional file Logistic regression model used to predict in-hospital death with 11 clinical variables, including model description, odds ratio, RF and LR models were used to examine the relative importance of all 55 features. The urine output (in deciliters) on the first day of ECMO institution was ranked as the first critical feature under the RF model (Fig. Ranking of the clinical features in the random forest (There were three categories of urine output in the first 24 h: (1) normal (more than 10 dl), decreased (5 dl to 10 dl), and oliguric (less than 5 dl). A comparison of decreased urine group and normal urine group showed that the HR of in-hospital death was 1.005 (Kaplan–Meier curve comparing the patients with and without oliguria (urine output less than 500 ml)A multi-variable Cox regression model adjusted for other variables was also used to analyze 1 year mortality. As compared with the normal group, the HR for 1 year mortality was 1.016 (