I am working with food security supplement data and have found that some households indicate no children, with nchild==0; however, a number of these households still indicate a value for FSSTATUSC (child food security). Is this due to error, or due to children that are not the respondents’ own children, or something else? Anyone else experienced this and have ideas/explanations?

NCHILD is a person-level variable giving the number of the person’s own children in the household. If there are children in the household, but their parents do not live with them (for example, if a child lived with their grandparents), then everyone in the household will have NCHILD=0. But since there are children present, the household will have a value for FSSTATUSC.