Table 5

Incidence of acute kidney injury stratified by the Risk, Injury, Failure, Loss of Kidney Function, End-stage Kidney Disease (RIFLE) and the Acute Kidney Injury Network (AKIN) definition/classification schemes

RIFLE classification
AKIN classification

None
372 (56.2%)
None
328 (49.5%)
Risk
97 (14.7%)
Stage 1
140 (21.1%)
Injury
73 (11%)
Stage 2
67 (10.1%)
Failure
120 (18.1%)
Stage 3
127 (19.2%)
Any category
290 (43.8%)
Any stage
334 (50.4%)

Lopes et al. Critical Care 2008 12:R110   doi:10.1186/cc6997