FCM-treated patients achieved Hb 12.0 g dl ( -1 ) more frequently ( 42.3 % vs 23.5 % ; P = 0.04 ) and showed a trend towards higher Hb increase from day 4 to day 30 [ +1.7 ( 1.2 ) vs +1.3 ( 1.0 ) ; P = 0.075 ] compared with FS-treated patients .