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Table 6 Predictive ability of RIFLE, AKIN, and KDIGO for in-hospital mortality

From: A comparison of different diagnostic criteria of acute kidney injury in critically ill patients

Predictive factors

Cutoff point

Sensitivity, %

Specificity, %

+LR

-LR

RIFLE

Risk-Failure

77.9

59.3

1.91

0.37

 

Injury-Failurea

58.3

80.3

2.96

0.52

 

Failure

36.9

90.0

4.05

0.69

AKIN

Stage 1-Stage 3a

73.9

68.7

2.36

0.38

 

Stage 2-Stage 3

49.6

86.7

3.73

0.58

 

Stage 3

36.4

92.0

4.52

0.69

KDIGO

Stage 1-Stage 3

83.5

55.6

1.88

0.30

 

Stage 2-Stage 3a

62.1

79.0

2.96

0.48

 

Stage 3

42.3

89.3

3.94

0.65

  1. aValue is the best cutoff point. AKIN, Acute Kidney Injury Network; KDIGO, Kidney Disease: Improving Global Outcomes; +LR, positive likelihood ratio; -LR, negative likelihood ratio; RIFLE, Risk, Injury, Failure, Loss of Kidney Function, and End-stage Kidney Disease.