Aim: The purpose of the present study was to determine whether Australian haemodialysis patients receiving intravenous epoetin alfa are comparable to those receiving darbepoetin alfa with respect to a range of demographic and clinical characteristics.
Methods: Data on haemodialysis patients were extracted from the Renal Anaemia Management database for the period from July 2003 to March 2004.
Results: Patients on haemodialysis were more likely to receive epoetin alfa than to receive darbepoetin alfa (n = 1898 vs n = 603, respectively). Patients receiving epoetin alfa were marginally older than patients receiving darbepoetin alfa (61 +/- 15 vs 59 +/- 15, mean +/- SD; P < 0.05). Patients were similar in terms of proportion of males, incidence of diabetes, and angiotensin-converting enzyme inhibitor and antihypertensive use. However, patients receiving epoetin alfa had higher haemoglobin (116 +/- 13 g/L vs 113 +/- 15 g/L), serum ferritin (582 +/- 414 mug/L vs 461 +/- 350 mug/L) and transferrin saturation levels (29 +/- 13% vs 26 +/- 14%), and better dialysis adequacy test results, as measured by urea reduction ratio (URR) or Kt/V, than patients on darbepoetin alfa (P < 0.001 in all cases). The frequency of dosing was higher in the epoetin alfa group (1.7 +/- 0.7 doses/week vs 1.0 +/- 0.4 doses/week, P < 0.001). Using the 240:1 dose ratio recommended in the Australian prescribing information for darbepoetin alfa, epoetin alfa was administered at a lower dose compared with darbepoetin alfa (164 +/- 116 IU/kg per week vs 192 +/- 152 IU/kg per week, P < 0.001).
Conclusion: This cross-sectional sample of Australian clinical practice suggests that there are differences in the haematological parameters of patients receiving epoetin alfa compared with patients receiving darbepoetin alfa.
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