Fig. 1From: Acute kidney injury prevalence, progression and long-term outcomes in critically ill patients with COVID-19: a cohort studyKaplan–Meier survival curves by maximal acute kidney injury (AKI) stage showing time from intensive care unit admission (in non-AKI patients) or from reaching maximal AKI stage (in AKI patients) to death or censoring at 90 daysBack to article page