Fig. 2From: Inclusion and definition of acute renal dysfunction in critically ill patients in randomized controlled trials: a systematic reviewNumber of studies per year of publication stratified by baseline acute renal dysfunction criteria (a) and acute renal dysfunction criteria as outcome (b). SOFA, Sequential Organ Failure Assessment; RIFLE, Risk, Injury, Failure, Loss, End-stage renal disease; AKIN Acute Kidney Injury Network; KDIGO, Kidney Disease Improving Global OutcomesBack to article page