To be eligible for the study, a mother could not have received information about IDA from a doctor or nurse, because such information could have influenced feeding behaviors (only one mother with a child in the target age range was excluded for this reason). Approximately 673 women with children 12–36 mo old were approached, and 498 gave consent to participate in the study (≈74% of those who were eligible). Subsequently, the interviewers asked whether the mothers would like to participate in the study. Men were excluded because the interview included questions pertaining to pregnancy. Interviewers were instructed to introduce themselves, to briefly describe the study, and to ask women whether they had a child between 12 and 36 mo old. Trained bilingual (English/Spanish), bicultural interviewers (1/county) approached all women in the WIC waiting rooms to recruit subjects for the study.
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