The report includes: (1) Directory of Abbreviations: a listing of acronyms and names of data systems and the Federal agencies that operate them; (2) Executive Summary: the purpose, highlights, information gaps, and future directions for the National Center for Injury Prevention and Control; (3) Introduction: the magnitude of the injury problem and the purpose of this inventory; (4) Methods: inclusion criteria and methods used in conducting this inventory; (5) Summary of Findings: descriptions of national data systems, system characteristics, and available data; and (6) National Data Systems: names and addresses of responsible Federal agencies, a brief overview, and uses and limitations of each data system. In addition, Summary Tables present details about the characteristics and injury-related data for each data system, and an Appendix provides the data collection instrument used for this inventory. Figure, tables, appendix, references