Baseline demographic and clinical data of patients at the time of acute kidney injury diagnosis stratified by RIFLE stages.

Note: Data were obtained at the time of AKI diagnosis unless otherwise noted. eGFR was evaluated by the Modification of Diet in Renal Disease formula. Abbreviations: RIFLE, Risk, Injury, Failure, Loss, and End-stage kidney disease; eGFR, estimated glomerular filtration rate; CVD, cardiovascular disease; DM, diabetes mellitus; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; Scr, serum creatinine; AKI, acute kidney disease; MAP, mean arterial pressure; WBC, white blood cells; ALT, alanine aminotransferase; AST, aspartate aminotransferase; CRP, C-reactive protein; BMI, body mass index; SOFA, Sequential Organ Failure Assessment; APACHE II, Acute Physiology and Chronic Health Evaluation II; SAPS, Simplified Acute Physiologic Score; SGA, Subjective Global Assessment.