Preliminary findings on iron supplementation and learning achievement of rural Indonesian children.

The effects of oral iron supplementation on blood iron levels and learning achievement in 130 rural Indonesian school children were assessed in this double-blind study. The children were classified into anemic and nonanemic groups according to their initial hemoglobin and transferrin saturation levels and were randomly assigned to either iron or placebo treatment for 3 mo. Hematological, anthropometric, and learning-achievement data were collected before (T1) and after (T2) the treatment period and 3 mo later. The means and standard deviations suggest that supplementation with 10 mg ferrous sulfate per kilogram body weight per day for 3 mo resulted in an apparent improvement in anemic subjects' hematological status and learning-achievement scores. No tests of statistical comparisons are reported.