Population Denominator Data for Use with the HCUP Databases

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OVERVIEW The Healthcare Cost and Utilization Project (HCUP) is a family of health care databases and related software tools and products developed through a Federal-State-Industry partnership and sponsored by the Agency for Healthcare Research and Quality (AHRQ). HCUP includes the largest collection of longitudinal hospital care data in the United States, with all-payer, encounter-level information beginning in 1988. These databases enable research on a broad range of health policy issues, including cost and quality of health services, medical practice patterns, access to health care programs, and outcomes of treatment at the national, state, and local market levels. The HCUP databases include the following: • The Nationwide Inpatient Sample (NIS) – the largest all-payer inpatient care database in the United States, containing data on nearly eight million hospital stays per year from approximately 1,000 hospitals. • The Kids' Inpatient Database (KID) – a nationwide sample of pediatric inpatient discharges. • The State Inpatient Databases (SID) – inpatient discharges from a census of hospitals in participating states. • The State Ambulatory Surgery Databases (SASD) – ambulatory surgery encounters from hospital-affiliated and sometimes freestanding ambulatory surgery sites from selected states. • The State Emergency Department Databases (SEDD) – hospital-affiliated emergency department visits that do not result in hospitalizations, collected from participating states. The objective of this report is to identify relevant sources of population data that can be used with the HCUP databases to calculate rates of hospital care events per population. This compilation includes data sources that provide nationwide population counts based on people, and not hospitals, physicians, or local resources. Not included are data sources collected by associations (e.g., the March of Dimes) or data collected for only one or a few states. When possible, collections with a mixture of information (i.e., demographic, health status, resource information) or other helpful resources are also mentioned. Table 1 lists the array of population data sources referenced in this report. (HCUP 11/24/08) 1 Population Denominator Data
Table 1. Population Denominator Data Consistent with Information in the HCUP Databases This table lists possible sources of population denominator data. Please consult the description of the data source for more details. A list of abbreviations appears at the conclusion of this table. DEMOGRAPHIC Age and Gender Race (modified 1990 definitions) Race (2000 Census definitions) Median Household Income Personal Income, Wages, Salaries Health Insurance Payer/Coverage AREA CHARACTERISTICS Urban-Rural Location Health Professionals Shortage Areas National Region State County ZIP Code Census ACS Vendor Census Census ACS Vendor Census ACS ARF Vendor Vendor Vendor ARF Vendor Census ACS Vendor CPS ACS BEA BLS SIPP CMS CPS (coverage) SAHIE SIPP MEPS Census ERS Census ERS Census ACS Vendor CPS ACS BEA BLS CMS CPS (coverage) SAHIE DISEASE PREVALENCE (FROM SURVEY AND DISEASE REGISTRIES) Disease Prevalence NHIS BRFSS NHANES NSDUH NCS-R SLAITS NAS SLAITS BRFSS NSDUH SEER Census ACS ACS BEA BLS SAHIE Census ERS HRSA OTHER Births NVSS - Natality NVSS - Natality NVSS - Natality Deaths NVSS - Mortality NVSS - Mortality COMBINATION – COMPILATION OF DATA FROM OTHER SOURCES Collection of demographic, health status, and resource information Health US KFF NWHIC US Stat NWHIC US Stat AARP Health US KFF NWHIC US Stat NVSS - Mortality ARF NWHIC Vendor WWAMI RHRC (HCUP 11/24/08) 2 Population Denominator Data
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APPENDIX B. USING PAYER POPULATION
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Time Dimension Differences Problem:
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Population Denominator Data for Use with the HCUP Databases

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