Fig. 2
From: Amino acids to prevent cardiac surgery-associated acute kidney injury: a randomized controlled trial
Kaplan–Meier curves for the outcomes. Kaplan–Meier curves are shown for the probability of a AKI, b Cre-AKI, c ICU stay, d hospitalization, e mechanical ventilation, and f RRT. Hazard ratios for a AKI, b Cre-AKI, (c) discharge from the ICU, d discharge from hospital, and e weaning from mechanical ventilation were obtained using Cox proportional hazards regression models. As RRT was administered to only three patients in the control group, no statistical analysis was performed for this variable. AKI, acute kidney injury; Cre-AKI, acute kidney injury defined only based on the creatinine value, in accordance with the Kidney Disease Improving Global Outcomes Criteria; CI, confidence interval; ICU, intensive care unit; RRT, renal replacement therapy