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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

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%)

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%)