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Table 3 The preoperative values of the calculated Acute Renal Failure (ARF) scores, the creatinine, and the estimated glomerular filtration rate (GFR) in relation to the AKIN-levels classified on postoperative day 4. The calculated ARF score in AKIN-levels 2 + 3 were significantly higher than in AKIN-levels 0 + 1 (4.07 ± 2.46 vs. 2.91 ± 1.83, p = 0.043)

From: NGAL expression during cardiopulmonary bypass does not predict severity of postoperative acute kidney injury

  AKIN 0 AKIN 1 AKIN 2 AKIN 3
ARF score 2.62 ± 1.74 3.52 ± 1.84 3.75 ± 1.85 4.43 ± 1.82
2.91 ± 1.83 4.07 ± 2.46
Creatinine (mg/dl) 0.99 ± 0.53 1.11 ± 0.33 1.03 ± 0.32 1.32 ± 0.64
1.03 ± 0.48 1.17 ± 0.53
GFR (ml/min/1.73 m2) 91.6 ± 41.9 69.8 ± 23.7 89.8 ± 34.7 43.3 ± 23.2
83.3 ± 33.82 68.1 ± 26,83