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Table 4 Logistic regression analysis with variables available for predicting advanced acute kidney injury and model accuracy after combining clinical models with urinary biomarkers

From: Urinary biomarkers predict advanced acute kidney injury after cardiovascular surgery

Model

AUC (95% CI)

p b

Liano’s score

0.619 (0.536 to 0.698)

 

Cleveland score

0.493 (0.410 to 0.576)

SOFA score

0.700 (0.619 to 0.773)

Hour 3

 Normalized uHJV

0.833 (0.753 to 0.895)

NA

 Liano’s + normalized uHJV

0.817 (0.736 to 0.882)

0.672

 Cleveland + normalized uHJV

0.808 (0.726 to 0.874)

0.662

 SOFA + normalized uHJV

0.786 (0.701 to 0.856)

0.419

  Normalized (uHJV + uKIM-1)

0.898 (0.804 to 0.957)

0.468

 Liano’s + normalized (uHJV + uKIM-1)a,c

0.931 (0.846 to 0.977)

0.206

 Cleveland + normalized (uHJV + uKIM-1)

0.883 (0.785 to 0.946)

0.817

 SOFA + normalized (uHJV + uKIM-1)

0.876 (0.776 to 0.942)

0.811

Hour 6

 Normalized uHJV

0.808 (0.726 to 0.874)

NA

 Liano’s + normalized uHJV

0.791 (0.707 to 0.860)

0.653

 Cleveland + normalized uHJV

0.769 (0.683 to 0.841)

0.544

 SOFA + normalized uHJV

0.759 (0.672 to 0.833)

0.426

 Normalized (uHJV + uKIM-1 + uNGAL)

0.834 (0.728 to 0.912)

0.634

 Liano’s + normalized (uHJV + uKIM-1 + uNGAL)

0.867 (0.766 to 0.935)

0.334

 Cleveland + normalized (uHJV + uKIM-1 + uNGAL)

0.817 (0.709 to 0.899)

0.985

 SOFA + normalized (uHJV + uKIM-1 + uNGAL)

0.812 (0.702 to 0.895)

0.920

Hour 12

 Normalized uHJV

0.841 (0.715 to 0.927)

NA

 Liano’s + normalized uHJV

0.834 (0.707 to 0.922)

0.879

 Cleveland + normalized uHJV

0.892 (0.776 to 0.960)

0.429

 SOFA + normalized uHJV

0.834 (0.705 to 0.923)

0.656

 Normalized (uHJV + uKIM-1 + uNGAL)

0.892 (0.769 to 0.963)

0.311

 Liano’s + normalized (uHJV + uKIM-1 + uNGAL)

0.923 (0.808 to 0.980)

0.151

 Cleveland + normalized (uHJV + uKIM-1 + uNGAL)

0.916 (0.800 to 0.976)

0.281

 SOFA + normalized (uHJV + uKIM-1 + uNGAL)

0.914 (0.795 to 0.975)

0.302

Hour 24

 Normalized uKIM-1

0.772 (0.625 to 0.882)

NA

 Liano’s + normalized uKIM-1

0.799 (0.655 to 0.902)

0.488

 Cleveland + normalized uKIM-1

0.765 (0.617 to 0.877)

0.737

 SOFA + normalized uKIM-1

0.797 (0.650 to 0.902)

0.587

 Normalized (uKIM-1 + uHJV + uNGAL)

0.855 (0.720 to 0.941)

0.085

 Liano’s + normalized (uKIM-1 + uHJV + uNGAL)

0.882 (0.753 to 0.958)

0.030

 Cleveland + normalized (uKIM-1 + uHJV + uNGAL)

0.863 (0.729 to 0.946)

0.096

 SOFA + normalized (uKIM-1 + uHJV + uNGAL)

0.869 (0.735 to 0.951)

0.082

  1. AUC area under the receiver-operating characteristic curve, CI confidence interval, SOFA score Sequential Organ Failure Assessment score, uHJV urinary hemojuvelin, uKIM-1 urinary kidney injury molecule-1, uNGAL urinary neutrophil gelatinase-associated lipocalin
  2. aHosmer-Lemeshow goodness of fit test: p = 0.481 for the best prediction model
  3. bCompared with normalized uHJV at hour 3, hour 6 and hour 12 and normalized uKIM-1 at hour 24
  4. cBest prediction model (greatest AUC), combined clinical model (Liano’s score) with biomarkers