The Centers for Medicare and Medicaid Services (CMS) offers researchers and other health care professionals a broad range of quantitative information on their programs, from estimates of future Medicare and Medicaid spending to enrollment, spending, and claims data, and a broad range of consumer research to help its partners and staff. CMS also conducts demonstration projects to explore alternative...

The National Health Interview Survey is a cross-sectional household interview survey. Sampling and interviewing are continuous throughout each year. The sampling plan follows a multistage area probability design that permits the representative sampling of households and noninstitutional group quarters (e.g., college dormitories). NHIS addresses topics such as health status, use of health services,...

The Statewide Planning and Research Cooperative System (SPARCS) is a comprehensive data reporting system established in 1979 as a result of cooperation between the health care industry and the New York State government. SPARCS currently collects patient level detail on patient characteristics, diagnoses and treatments, services, and charges for every hospital discharge, ambulatory surgery patient,...

The Area Health Resources Files (AHRF) provide current as well as historic data for more than 6,000 variables for each of the nation's counties, as well as state and national data. They contain information on health facilities, health professions, measures of resource scarcity, health status, economic activity, health training programs, and socioeconomic and environmental characteristics. In addition,...

The Kids' Inpatient Database (KID) is part of a family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The KID is the largest publicly-available all-payer inpatient care database on children. The unique design of the KID enables national and regional studies of common and rare pediatric conditions. The KID can be used to identify, track, and analyze...

The State Ambulatory Surgery and Services Databases (SASD) are part of the family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The SASD are a set of databases that capture surgeries performed on the same day in which patients are admitted and released. The SASD contain more than 100 clinical and nonclinical variables abstracted from hospital discharge...

The Nationwide Inpatient Sample (NIS) is part of a family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The NIS is the largest all-payer inpatient health care database in the United States, yielding national estimates of hospital inpatient stays. The NIS can be used to identify, track, and analyze national trends in health care utilization, access,...

The Nationwide Emergency Department Sample (NEDS) is part of a family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The NEDS is the largest all-payer emergency department (ED) database in the United States, yielding national estimates of hospital-based ED visits. The NEDS enables analyses of ED utilization patterns and supports public health professionals,...

The State Inpatient Databases (SID) are part of the family of databases and software tools developed for the Healthcare Cost and Utilization Project (HCUP). The SID are a set of hospital databases containing the universe of the inpatient discharge abstracts from participating States, translated into a uniform format to facilitate multi-State comparisons and analyses. The SID can be used to investigate...

The National Ambulatory Medical Care Survey (NAMCS) is a national survey designed to provide objective, reliable information about the provision and use of ambulatory medical care services in the United States. The survey was conducted annually from 1973 to 1981, in 1985, and annually since 1989. The survey samples visits to non-federally employed office-based physicians who are engaged in direct patient...