Fig. 2From: Acute kidney injury in critical COVID-19: a multicenter cohort analysis in seven large hospitals in BelgiumOccurrence rate and ICU mortality of AKI stages. a Occurrence rate and b ICU mortality of AKI stages defined according to the full KDIGO definition and its components AKI-sCr and AKI-UO. AKI = acute kidney injury, AKI-sCr = AKI based on creatinine criteria only, AKI-UO = AKI based on urine output criteria only. Statistical significance of comparison of ICU mortality in AKI-sCr versus AKI-UO stages: AKI stage 0: p = 0.002; AKI stage 1: p < 0.001; AKI stage 2: p = 0.001; AKI stage 3: p = 0.070Back to article page