From: Acute kidney injury in intensive care unit patients: a comparison between the RIFLE and the Acute Kidney Injury Network classifications
RIFLE classification
AKIN classification
None
372 (56.2%)
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%)