Post hoc analyses indicated that there was a significant fall in ERI for patients with the highest baseline ESA resistance dialysed with the VE ( @ -LSB- @-@ @ -RSB- versus @ -LSB- @-@ @ -RSB- IU/week/kg / g/dL Hb , P = @ ) but not the control membranes ( @ -LSB- @-@ @ -RSB- versus @ -LSB- @-@ @ -RSB- IU/week/kg / g/dL Hb , P = @ ) ; this was not attributable to changes in CRP levels .