"Contains summary information about the nonbibliographic machine-readable data bases containing national-level health care data pertaining to periods between January 1, 1976 and December 31, 1983 that have been created by public and private sector organizations throughout the United States and that are available to researchers outside the sponoring organizations." Arranged alphabetically by sponsors and by titles. Each entry gives purpose and scope, subject headings, input source, universe, frequency, year for which tapes are available, availability, cost, contact, publications, and other information. Miscellaneous indexes.