Cox proportional hazard models for the association between 30-day mortality and AKI according to the different AKI criteria used.

AKI, acute kidney injury; AHR, adjusted hazard ratio; CI, confidence interval; RIFLE, Risk, Injury, Failure, Loss, and End-stage kidney Disease; KDIGO, Kidney Disease: Improving Global Outcomes.The model was adjusted for age, gender, admission estimated glomerular filtration rate, history of diabetes, history of extracardiac vascular disease, Killip class, admission systolic blood pressure, admission heart rate, admission creatine phosphokinase and glycemia, clopidogrel use during hospitalization, therapy with diuretics, coronary angiography during hospitalization, reperfusion therapy with primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction, any kind of revascularization with either PCI or coronary artery bypass graft performed during hospitalization, reinfarction or severe systolic left ventricular dysfunction.*The AHR was estimated for each set of criteria with consideration of patients without AKI for each.