Defined as a household consisting of any of the following: a single family nucleus and other persons related to the nucleus, for example, a father with child(ren) and other relative(s) or a married couple with other relative(s) only; two or more family nuclei related to each other without any other persons, for example, two or more married couples with child(ren) only; two or more family nuclei related to each other plus other persons related to at least one of the nuclei, for example, two or more married couples with other relative(s) only; two or more persons related to each other, none of whom constitute a family nucleus.