Description: This database and analysis, from the Society of Actuaries [SOA] ‘Experience Studies – Group Health,’ was prepared by the SOA Medical Large Claims Experience Committee, SOA Committee on Health Benefit Systems Research and the SOA Health Section. The database is a follow-up to the 1991–92 Group Medical Large Claims Database. The study explores and analyzes factors affecting incidence rates and the distribution of claim sizes. The database contains claims from three years: 1997, 1998 and 1999. While the 1991–1992 database focused only “large claims” i.e., claimants with annual paid charges of at least $25,000, the 1997–1999 database contains all claimants, regardless of charge amount. Data from seven insurers are represented. For the three years combined, the database contains 4,294,030 claimants and total paid charges of approximately $7.1 billion. In addition to the report there is 2 page database documentation and four zipped data files.