Patient demographic data and clinical characteristics on the first of CCU admission according to with/without AKI.

AKI, acute kidney injury; APACHE, Acute Physiology and Chronic Health Evaluation; AST, aspartate aminotransferase; BNP, B-type natriuretic peptide; CAD, coronary artery disease; CCU, coronary care unit; CysC, cystatin C; eGFR, estimated glomerular filtration rate; hs-CRP, high-sensitivity C reactive protein; IL-18, interleukin-18; NGAL: neutrophil gelatinase-associated lipocalin; NS, not significant.