National Inpatient Sample (NIS)

This database is from the Agency for Healthcare Research and Quality. We have data for 2001-2011 & 2016-2018. 

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National Emergency Department Sample (NEDS)

This database is from the Agency for Healthcare Research and Quality. We have data for 2016-2018. Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

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Nationwide Ambulatory Surgery Sample (NASS)

This database is from the Agency for Healthcare Research and Quality. We have data for 2016-2018.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

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Nationwide Readmissions Database (NRD)

This database is from the Agency for Healthcare Research and Quality. We have data for 2016-2018.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

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Kids' Inpatient Database (KID)

This database is from the Agency for Healthcare Research and Quality. We have data for 2016.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

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IBM Marketscan Commercial Claims and Encounters Database

This database includes comprehensive healthcare utilization claims (outpatient, inpatient and drugs) for about 25 million individuals every year. All are employees (and spouses and dependents) covered by employer-sponsored health insurance. We have data for 2016. For more detailed documentation contact HSR Core. Access is available to all Wake Forest School of Medicine faculty and researchers.

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State Inpatient Discharge

Each database contains a near-universe of all hospitalizations in all non-federal hospitals in the state. The National Inpatient Sample is derived from the state inpatient discharge databases. We have data from 2010 to 2019 from 22 states. For a majority of states, the data are from the Agency for Healthcare Research Quality, and for the remaining states they were obtained from individual state agencies.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

NOTE: For some state, data have been acquired under specific data use agreements with state agencies. Access to users may require an amendment to the existing data use agreements.

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State Emergency Department Database

Each database contains a near-universe of all outpatient emergency department (ED) vists in all non-federal hospitals in the state. The National Emergency Department Sample is derived from the state emergency department databases. We have data from 2010 to 2019 from 15 states. For a majority of states, the data are from the Agency for Healthcare Research Quality, and for the remaining states they were obtained from individual state agencies.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

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Medicare Fee for Service Claims

These databases include comprehensive healthcare utilization claims (outpatient, inpatient and drugs) for Medicare enrollees. Currently we have claims records for large samples of Medicare enrollees aged 65 and older under the Fee for Service plan. View introductory information on the Medicare Fee for Service claims databases see and download more detailed documentation on the different claims databases.

Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

NOTE: The data available have been obtained under specific data use agreements with the Centers for Medicare and Medicaid Services (CMS). Access to users may require an amendment to the existing data use agreements, which may involve processing fees.

Medicare Current Beneficiary Survey (MCBS)

These databases include comprehensive healthcare utilization claims (outpatient, inpatient and drugs) and survey data for a sample of Medicare enrollees (about 25,000 every year). We have data for 2000-2013 and 2015-2016. Access is available to all Wake Forest School of Medicine faculty, staff researchers and students.

Contact HSR Core for more information.

NOTE: The data available have been obtained under specific data use agreements with the Centers for Medicare and Medicaid Services (CMS). Access to users may require an amendment to the existing data use agreements, which may involve processing fees.

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