Systematic review and meta-analysis approach on vitamin A fortified foods and its effect on retinol concentration in under 10 year children.

Objective: To carry out a systematic review and meta-analysis of the trials to identify as well as quantify the effect of vitamin A fortified food on serum vitamin A concentration among children under 10 year.

Study Design: All the relevant studies has been retrieved by MEDLINE, PubMed, Embase, ProQuest and the Cochrane Library and secondary referencing. A random effects model was applied to compute the pooled effect size of effect of serum retinol.