Table 4.

Concentrations of hemoglobin, ESA doses and erythropoietin resistance index (ERI) at Control and Study phase

Variable	Number	Control phase	Study phase	Percent variation study versus control phase
Hemoglobin (g/dl)	32	11.2 ± 0.9	11.9 ± 1.3●	+6.25
Epoietin alpha (units per week)	19	11,313 ± 650	8670 ± 554●	−23.4
Darboepoietin alpha (units per week)	10	108 ± 111	85 ± 69+	−21.3
Methoxy polyethylene glycol-epoetin beta (unit per month)	3	233 ± 130	152 ± 67	−34.8
ERI: EPO (week/BW)/Hb	29	13.1 ± 7.5	9.5 ± 6.0●

Numbers are mean ± SD

^● p < 0.01

⁺ p < 0.05