This codebook describes the contents of a data file from the Health Insurance Experiment (HIE), a large social experiment conducted by The RAND Corporation from 1974 to 1982 under a grant from the U.S. Department of Health and Human Services. The codebook provides supplemental data for certain subsets of the participant sample including information about enrollment refusals, changes affecting health maintenance organizations (HMOs) and fee-for-service vs. HMO analyses, identifiers for mothers of newborns, and a revised death date. For each variable, this codebook lists the data sources, defines all response codes, and tabulates the response frequencies.
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