Confounders
depression, diarrhea, fever
Confounding variables were considered at child, maternal, and household levels. These included child age and sex, infant and young child feeding practices, childhood illnesses (fever, diarrhea in the last 2 wk), maternal age, ethnicity, education, intelligence, and depression, intervention group, and duration of intervention prior to conception. Infant and young child feeding practices included early initiation of breastfeeding, exclusive breastfeeding at 6 mo, and dietary diversity at 12 mo and 24 mo using the standard WHO/UNICEF indicators [