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. 2015 Feb 3;10(4):554–561. doi: 10.2215/CJN.01900214

Table 2.

Mortality likelihood ratios for AKI severity stages

Definition All Hospitalizations ICU Non-ICU
Stage 1 Stage 2 Stage 3 Stage 1 Stage 2 Stage 3 Stage 1 Stage 2 Stage 3
pRIFLE 1.44 (0.99 to 2.09) 2.28 (1.53 to 3.41) 6.64 (4.82 to 9.15) 3.08 (1.64 to 5.79) 6.06 (3.26 to 11.3) 20.49 (12.0 to 35.0) 0.91 (0.55 to 1.50) 0.96 (0.51 to 1.81) 1.96 (1.17 to 3.31)
AKIN 1.69 (1.19 to 2.41) 2.29 (1.57 to 3.35) 6.38 3.83 5.82 13.37 1.0 0.77 1.02
KDIGO 1.30 (0.87 to 1.93) 1.90 (1.25 to 2.89)a 5.15 (3.84 to 6.90)a 2.85 (1.59 to 5.13)a 4.42 (2.47 to 7.89)a 14.34 (9.18 to 22.4)a 0.73 (0.41 to 1.30) 0.82 (0.41 to 1.64) 1.22 (0.69 to 2.13)

The likelihood of death (and 95% confidence interval) for each AKI severity stage is compared with that of hospitalizations not complicated by AKI. ICU, intensive care unit.

a

P<0.05 after correction for multiple testing.