Iron fortification trial was undertaken for a duration of two years in Amphoe Uthuтphon Phisai, Changwat Si Sa Ket. A total population of 4,242 in 6 villages was included in the study and a group of females age 15-45 years of which the subgroups were 124 placebo, 129 fortified salt and 165 combined fortified salt and fortified fish sauce, was selected for paired study.
