Produced by the Dartmouth Institute, the "Dartmouth Atlas Project has documented glaring variations in how medical resources are distributed and used in the United States.

Includes national health care indicators and expenditures (aggregate national health care spending); Medicare enrollment (aged, disabled, all), utilization, and expenditure; DRG data for short-stay hospitals; Medicare Chartbook; Data Compendium (Annual compilation of national health care data); Medicaid data.

A set of large-scale surveys of families and individuals, their medical providers, and employers across the United States. MEPS is the most complete source of data on the cost and use of health care and health insurance coverage.