Mean ( 95 % confidence interval [ CI ] ) change in Hb between baseline and the evaluation period was 2.16 ( 1.98-2 .33 ) g/dL for the Q2W group and 1.97 ( 1.80-2 .14 ) g/dL for the QM group , the mean ( 95 % CI ) difference in Hb change being -0.19 ( -0.43 to 0.05 ) g/dL .