| [effect of weekly rice fortification with iron on anemia prevalence and hemoglobin concentration among children attending public daycare centers in rio de janeiro, brazil]. | this was a double-blind, placebo-controlled, community-based trial. for 16 weeks, children in the intervention group (n = 180) received iron-fortified rice, while children in the control group (n = 174) received rice with placebo. anemia was defined as hemoglobin < 11.0g/dl. student's t-test was used to compare mean variation in hemoglobin between the groups. hemoglobin concentration improved in both groups, with a mean increase of 0.42g/ dl in the intervention group (11.28+/-1.23g/dl to 11.75+/ ... | 2009 | 19219236 |