Measure Methodology Change: Data collection changed from retrospective in 2006 to current in 2008.
Missing Data Year: The year 2007 is excluded due to a change in data collection strategy.
Inclusion Criteria: Private-sector establishments include all establishments in the United States with at least one employee. (Frame is the U.S. Census Bureau' Business Register.) Governmental units include all State and local governmental units in the United States. (Frame is the Census of Governments).
Exclusion Criteria: Private-sector establishments exclude self-employed with no employees. Governmental units exclude Federal workers and the military.
Establishment: A particular workplace or physical location where business is conducted or services or industrial operations are performed. This is also known as a site. The sample is chosen at the establishment level, and the MEPS-IC data are collected at the establishment level whenever possible.
Firm: A business entity consisting of one or more establishments under common ownership or control (also known as an enterprise). A firm represents the entire organization, including the company headquarters and all divisions, subsidiaries and branches. A firm may consist of a single-location establishment or multiple establishments. In the case of a single-location firm, the firm and establishment are identical. Firm size is the total number of employees for the entire firm as reported on the sample frame.
Early Retirees: Retirees under age 65.
This measure is calculated by the Agency for Healthcare Research and Quality/Center for Financing, Access and Cost Trends (AHRQ/CFACT) from the Medical Expenditure Panel Survey - Insurance Component (MEPS-IC).