Cox regression analysis for the primary end point of the study (composite outcome of cardiac death and myocardial infarction).

Hazard ratios (HR) in models 1–4 are adjusted for age, hemoglobin and left ventricular ejection fraction; HRs in models 5–7 are also mutually adjusted.HRs for CKD are vs. no-CKD; for all other variables, HRs are for values above vs. below median.ADMA = asymmetric dimethylarginine; CKD = chronic kidney disease; CI = confidence intervals; SDMA = symmetric dimethylarginine.