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Table 5 Predictive ability of RIFLE and AKIN for outcome variables by logistic regression model

From: Clinical accuracy of RIFLE and Acute Kidney Injury Network (AKIN) criteria for acute kidney injury in patients undergoing cardiac surgery

Outcome Variable

AKI Definition

Level

Odds Ratio (95% CI)

P-value

AUC (95% CI)

Mortality

RIFLE

per 1 class

4.5 (3.6 to 5.6)

<0.001

0.80 (0.75 to 0.85)

 

AKIN

per 1 stage

5.3 (4.3 to 6.6)

<0.001

0.82 (0.77 to 0.87)

Prolonged intubation (alive)

RIFLE

per 1 class

3.3 (2.8 to 3.8)

<0.001

0.66 (0.64 to 0.69)

 

AKIN

per 1 stage

3.3 (2.8 to 3.8)

<0.001

0.67 (0.64 to 0.69)

   

Estimate (95% CI)

P-value

 

ICU length of stay (alive), hours

RIFLE

per 1 class

61 (54 to 68)

<0.001

 
 

AKIN

per 1 stage

59 (53 to 66)

<0.001

 

Hospital length of stay (alive), days

RIFLE

per 1 class

4.3 (3.9 to 4.8)

<0.001

 
 

AKIN

per 1 stage

4.1 (3.7 to 4.6)

<0.001

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