Early-onset anemia after kidney transplantation is an independent factor for graft loss: a multicenter, observational cohort study.

Background: The association of anemia with outcomes after renal transplantation (RT) is unclear.

Methods: We performed a retrospective study that included patients who received a RT in Spain in 2007. We collected data on anemia (hemoglobin [Hb] <11 g/dL and/or erythropoietic agents and/or transfusion in the previous month) as well as transplantation and clinical data during follow-up.