Program consists of two surveys, the Quarterly Interview Survey and the Diary Survey, that provide information on the buying habits of American consumers, including data on their expenditures, income, and consumer unit (families and single consumers) characteristics.
The Center for Microeconomic Data serves to centralize the collection, acquisition, and analysis of microeconomic data at the New York Fed and act as a catalyst for microeconomic research by promoting engagement with the wide academic community.
The wealth index is a composite measure of a household's cumulative living standard. The wealth index is calculated using easy-to-collect data on a household’s ownership of selected assets, such as televisions and bicycles; materials used for housing construction; and types of water access and sanitation facilities. - See more at: http://www.dhsprogram.com/topics/wealth-index/Index.cfm#sthash.Oh3XNen7.dpuf