Living with two cohabiting parents' refers to situations where a child lives in a household with two adults that are considered parents and these parents are not married to each other. ' Living with a single parent' refers to situations where a child lives in a household with only one adult that is considered a parent. ' Other' refers to a situation where the child lives in a household where no adult is considered a parent.. Source: OECD Family Database, SF1.2 Children in families. In some countries (Belgium, Sweden, the Czech Republic, the United Kingdom, Denmark and Sweden) half or more of the total poor children live in a single-parent family.