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Table 3 AKI diagnoses and staging using UO criterion with ABW and IBW

From: Actual versus ideal body weight for acute kidney injury diagnosis and classification in critically Ill patients

AKI stage (Actual BW)

AKI stage (ideal BW)

Total N (%)

0

1

2

3

0

289 (58.6)

0 (0)

0 (0)

0 (0)

289 (58.6)

1

45 (9.1)

61 (12.4)

0 (0)

0 (0)

106 (21.5)

2

5 (1.0)

31 (6.3)

40 (8.1)

0 (0)

76 (15.4)

3

0 (0)

0 (0)

5 (1.0)

17 (3.4)

22 (4.5)

Total, N (%)

339 (68.8)

92 (18.7)

45 (9.1)

17 (3.4)

493

  1. Kappa = 0.78 (95% CI 0.73-0.84) and percentage agreement = 89.9% for AKI diagnosis.
  2. Kappa = 0.77 (95% CI 0.73-0.82) and percentage agreement = 82.6% for AKI staging.
  3. Abbreviation: AKI acute kidney injury, BW body weight, CI confidence interval.