Skip to main content

Table 2 Diagnosis and staging of AKI before and after adjustment for fluid balance in patients after cardiac surgery

From: Hemodilution is associated with underestimation of serum creatinine in cardiac surgery patients: a retrospective analysis

Unadjusted AKI stage

Adjusted AKI stage

Total, N (%)

0

1

2

3

0

890 (66.7)

50 (3.7)

0 (0)

0 (0)

940 (70.5)

1

19 (1.4)

301 (22.6)

6 (0.4)

0 (0)

326 (24.4)

2

0 (0)

2 (0.1)

31 (2.3)

7 (0.5)

40 (3.0)

3

0 (0)

0 (0)

1 (0.07)

27 (2.0)

28 (2.1)

Total, N (%)

909 (68.1)

353 (26.5)

38 (2.8)

34 (2.5)

1334

  1. Kappa = 0.86 (95% CI 0.83–0.89) and percentage agreement = 94.9% for AKI diagnosis
  2. Kappa = 0.86 (95% CI 0.83–0.89) and percentage agreement = 93.8% for AKI staging