*Blue asterisks highlight that standardized differences are not available for dialysis and ultrafiltration for the internal validation sample because there were no patients with these treatments in the Group 1 in the internal validation sample.
Notes: Variables are ordered by standardized mean difference in the primary cohort. Group 4 vs 1 validation group age difference (represented by an arrow) was beyond the left border, with standardized difference −1.33. In the validation group, no one in group 1 received dialysis or ultrafiltration, so validation group estimates are not available.
Abbreviations: ICD, implantable cardioverter defibrillator; Hgb, hemoglobin; T, total; ALT, alanine aminotransferase; AST, aspartate aminotransferase; MCS, mechanical circulatory support; ECMO, extracorporeal membrane oxygenation; IABP, intra-aortic balloon pump; SBP, systolic blood pressure; DBP, diastolic blood pressure; CPB, cardiopulmonary bypass; BSA, body surface area; BMI, body mass index; CKD, chronic kidney disease