- High ESA dose: An epoetin dose of >=360 international unit (IU)/kilogram (kg)/week IV or >=250 IU/kg/week subcutaneous (SC) or darbepoetin dose of >=1.8 microgram (mcg)/kg/week IV or SC or methoxy PEG-epoetin beta dose of >= 2.2 mcg/kg/week within the prior 8 weeks through Day 1 (randomization).