To assess the effect of Aranesp_ on the hemoglobin (Hgb) of CRI subjects who are recombinant human erythropoietin (rHuEPO)-naïve or converting from rHuEPO therapy. To assess the association between subject self-reported health-related quality of life (HRQoL) as it relates to Hgb concentration and glomerular filtration rate (GFR) in subjects who were rHuEPO-naïve prior to study enrollment. To characterize the health-related resource utilization of subjects with CRI. To characterize the subject satisfaction with Aranesp_ compared to previous rHuEPO therapy. To characterize iron treatment in subjects with CRI. To assess the safety profile of Aranesp_ therapy in subjects with CRI
To assess the effect of Aranesp on the hemoglobin (Hgb) of CRI subjects who are recombinant human erythropoietin (rHuEPO)-naïve or converting from rHuEPO therapy.