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Table 1 Serum levels of hemoglobin, iron, and ferritin before and after the three supplementation regimens

From: Daily versus intermittent iron supplementation in pregnant women

   Daily (n = 50) P value Three-time a week (n = 43) P value Weekly (n = 49) P value
Hemoglobin(g/dL, mean ± SD) Before supplementation 12/44 ± 0/99 P<0/001* 12/62 ± 0/78 P = 0/541 12/53 ± 0/77 P<0/001*
  After supplementation 11/084 ± 0/82   14/03 ± 14/68   11/62 ± 0/82  
Serum iron (μg/dl, mean ± SD) Before supplementation 96/74 ± 34/31 P = 0/948 94/21 ± 31/14 P = 0/516 97/28 ± 31/65 P = 0/942
  After supplementation 97/14 ± 40/06   99/90 ± 53/33   96/57 ± 62/62  
Serum ferritin (μg/L, mean ± SD) Before supplementation 59/66 ± 45/32 P = 0/005* 58/82 ± 33/6 P = 0/00* 56/53 ± 33/33 P = 0/002*
  After supplementation 39/90 ± 4/51   32/86 ± 32/78   37/87 ± 34/95