HCUP Supplemental Files
The HCUP Supplemental Files augment the information available in the HCUP databases. They are part of a family of databases and software tools developed as part of the Healthcare Cost and Utilization Project (HCUP), a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality. HCUP databases, tools, and software inform decision making at the national, State, and community levels.
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HCUP Supplemental Files provide various types of additional information that is valuable to users of HCUP data for research and reporting. In many cases it is more efficient and timely to supply supplemental hospital-level or discharge-level data files separately, rather than inserting such data directly in HCUP databases. For example, the HCUP Cost-to-Charge Ratio (CCR) Files which include data elements that can be linked to the HCUP NIS, KID, and SID files are made available several months after the release of the corresponding database because of delays in acquiring the necessary information to produce them. Each type of HCUP Supplemental Files is appropriate for use with specific HCUP databases. Information provided below includes relevant databases, availability, and links to detailed information. |
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The AHA Linkage Files are hospital-level files that contain a small number of data elements that allow researchers to link hospital identifiers on the HCUP state databases to the American Hospital Association Annual Survey Databases (Health Forum, LLC © 2012). Linkage is only possible in States that allow the release of hospital identities.
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The HCUP Cost-to-Charge Ratio (CCR) Files are hospital-level files that facilitate the conversion of inpatient total charges to total costs. The total charge on an inpatient discharge record represents the amount that a hospital billed for services, but does not reflect how much hospital services actually cost or the specific amounts that hospitals received in payment. In some cases, users may be interested in seeing how hospital charges translate into actual costs.
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The HCUP Hospital Market Structure (HMS) Files are hospital-level files that contain various measures of hospital market competition. These measures are aggregate and are meant to broadly characterize the intensity of competition that hospitals may be facing under various definitions of market area.
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The Kids’ Inpatient Database Trends (KID-Trends) File is a discharge-level file that provides KID data users with trend weights consistently defined between 1997 and later years.
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The Nationwide Inpatient Sample Trends (NIS-Trends) Files are discharge-level files that provide the NIS data user with both the trend weights and data elements that are consistently defined across data years. The purpose of the NIS-Trends Files is to ease the burden on researchers conducting analyses that span multiple years and account for sample design changes.
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The HCUP Supplemental Files for Revisit Analyses are discharge-level files designed to facilitate analyses that need to track patients within a state and across time and hospital settings (inpatient, emergency department, and ambulatory surgery) while adhering to strict privacy guidelines.
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Internet Citation: HCUP Supplemental Files. Healthcare Cost and Utilization Project (HCUP). January 2013. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/toolssoftware/supplemental.jsp. |
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If you have comments, suggestions, and/or questions, please contact hcup@ahrq.gov. |
Last modified 1/15/13 |