For the primary measure of dependency, as well as selected indicators and measures, estimates are provided for individual persons by family structure (see SUM 1, IND 1, IND 2, IND 5, and ECON 7). For these measures, the entire population is subdivided into the following four groups:
- Persons in Married-Couple Families
- Persons in Female-Headed Families
- Persons in Male-Headed Families
- Unrelated Persons.
Two additional measures use a subset of the above categories (see IND 4, and ECON 1).