This longitudinal survey was designed to add significantly to the amount of detailed information available on the economic situation of households and persons in the United States. These data examine the level of economic well-being of the population and also provide information on how economic situations related to the demographic and social characteristics of individuals.
There are three basic elements contained in the survey. The first is a control card that records basic social and demographic characteristics for each person in a household, as well as changes in such characteristics over the course of the interviewing period.
The second element is the core portion of the questionnaire, with questions repeated at each interview on labor force activity, types and amounts of income, participation in various cash and noncash benefit programs, attendance in postsecondary schools, private health insurance coverage, public or subsidized rental housing, low-income assitance, and school breakfast and lunch participation.
The third element consists of topical modules which are series of supplemental questions asked during selected household visits. The Wave IV Rectangular core and Topical Module file contains both the core data and sets of questions exploring the subjects of assets and liabilities, retirement and pension coverage, and housing costs, conditions, and energy usage.