CRP and acute kidney injury: Cluster 3 was associated with higher systemic inflammation (C-reactive protein: 84 vs. 15-24 mg/l, <i>P</i> = 0.0002; neutrophil-to-lymphocyte ratio (NLR): 7 vs. 3.2-2.3, <i>P</i> < 0.0001) and more severe initial AKI (peak creatinine: 360 vs. 215-208 μmol/l, <i>P</i> = 0.0001).