Long-term outcomes after severe acute kidney injury in critically ill patients the SALTO study

Abstract

Univariate and multivariate analysis with Cox model were used to identify risk factors associated with long-term mortality. Variables with p < 0.1 in the univariate analysis as well as those that are clinically important like severity, age and some comorbidities were included in the model. Schoenfeld residuals are presented in the supplementary appendix (Additional file 1: Figure S3) to check the proportional hazards assumption. We analyzed risk factors associated with the occurrence of WRF. In this context, we tested variables which have been reported to be potentially associated with worse renal outcomes (CKD, CCF, diabetes, age, hypertension, severity scores) [23]. We also assessed a potential association between RRT initiation strategy and WRF.