Multivariate Cox proportional hazards analysis for relative risk of cardiovascular events and overall mortality calculated for intravenous iron groups in a follow-up of 12 months.

Hazard ratios and 95% confidence intervals (CIs) were derived from Cox regression analysis with intravenous iron dose taken into account as a time-dependent covariate.
aThe multivariate model included variables for age, sex, diabetes, hypertension, prior cardiovascular disease, hemodialysis duration, serum albumin, hemoglobin, and C-reactive protein.