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1. HCUP Supplemental Variables for Revisit Analyses
   hcup-us.ahrq.gov/toolssoftware/revisit/revisit.jsp
   October 01, 2024 - HCUP Supplemental Variables for Revisit Analyses … analyses that need to track patients across time and hospital settings in the SID, SASD, and SEDD … Contents: Overview How Can the HCUP Variables for Revisit Analyses be Used? … Return to Contents   How Can the HCUP Variables for Revisit Analyses be Used? … A few possible analyses include: Repeat ED use Readmissions to the hospital Admissions to the

2. Research Tools
   hcup-us.ahrq.gov/tools_software.jsp
   July 01, 2025 - systematically create new data elements from existing data, thereby enhancing a researcher's ability to conduct analyses … with HCUP Nationwide Databases NIS-Trend Weights Files ** Needed for NIS longitudinal analyses … that use the NIS 1993-2002 KID-Trend File ** Needed for KID longitudinal analyses that … , 2006, and 2009   For Use with HCUP State Databases Supplemental Variables for Revisit Analyses … *** Facilitate analyses that need to track patients within a state and across time and hospital

3. Checklist for Working with the NRD
   hcup-us.ahrq.gov/db/nation/nrd/nrdchecklist.jsp
   November 01, 2024 - Accounting for the sampling design is critical for accurate analyses. … ⬜ No State-level analyses are performed. … ⬜ Facility-level analyses are limited. … ⬜ No physician-level analyses are performed. … Return to top Data Analysis ⬜ Using the NRD for readmission analyses.

4. Checklist for Working with the NASS
   hcup-us.ahrq.gov/db/nation/nass/nasschecklist.jsp
   November 01, 2024 - ⬜ Revisit analyses cannot be performed. … The NASS cannot be used to conduct revisit analyses. … Variables for Revisit Analyses page on HCUP-US … ⬜ No State-level analyses are performed. … ⬜ No facility-level analyses are performed.

5. Checklist for Working with the KID
   hcup-us.ahrq.gov/db/nation/kid/kidchecklist.jsp
   September 01, 2025 - Accounting for the sampling design is critical for accurate analyses. … ⬜ No State-level analyses are performed. … The sampling design of the KID does not support State-level analyses. … ⬜ Facility-level analyses are limited. … ⬜ No physician-level analyses are performed.

6. MS2019-04 (pdf file)
   hcup-us.ahrq.gov/reports/methods/2019-04.pdf
   January 01, 2019 - granular analyses (e.g., ZIP Code-level analyses). 2. … HCUP (12/11/2019) 8 Methods Series Report: County-Level Analyses Table 5. … HCUP (12/11/2019) 14 Methods Series Report: County-Level Analyses APPENDIX A. … HCUP (12/11/2019) 18 Methods Series Report: County-Level Analyses APPENDIX C. … HCUP (12/11/2019) 19 Methods Series Report: County-Level Analyses APPENDIX D.

7. Checklist for Working with the NIS
   hcup-us.ahrq.gov/db/nation/nis/nischecklist.jsp
   September 01, 2025 - Accounting for the sampling design is critical for accurate analyses. … ⬜ No State-level analyses are performed. … The sampling design of the NIS does not support State-level analyses. … ⬜ Facility-level analyses are limited. … ⬜ No physician-level analyses are performed.

8. Checklist for Working with the NEDS
   hcup-us.ahrq.gov/db/nation/neds/nedschecklist.jsp
   November 01, 2024 - The NEDS cannot be used to conduct revisit analyses. … Variables for Revisit Analyses page on HCUP-US … ⬜ No State-level analyses are performed. … ⬜ Facility-level analyses are limited. … ⬜ No physician-level analyses are performed.

9. NRD Overview
   hcup-us.ahrq.gov/nrdoverview.jsp
   September 01, 2025 - About the NRD The NRD is a unique and powerful database designed to support various types of analyses … Designed to be flexible to various types of analyses of readmissions in the United States for all types … Designed to support national readmission analyses but not for use in regional, State-, or hospital-specific … analyses. … nonclinical variables for each hospital stay, including: Variables essential to readmission analyses

10. HCUP-US Index Page
    hcup-us.ahrq.gov/tech_assist/index_pqr.jsp
    April 01, 2021 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Reports - NRD Reports - SASD Reports - SEDD Reports - SID Reports - Statistical Briefs Revisit Analyses … - HCUP Supplemental Variables Revisit Analyses - Overview of Key Readmission Measures and Methods … (PDF report) Revisit Analyses - Methodological Issues when Studying Readmissions and Revisits using

11. HCUP Overview Course - Accessible Version
    hcup-us.ahrq.gov/HCUP_Overview/HCUP_Overview/index508.jsp
    September 01, 2025 - The NRD was created to enable analyses of national readmission rates. … HCUP databases are available for State analyses, and nationwide analyses of regional and nationwide estimates … Under ESTIMATE 1 and ESTIMATE 2, use the numbers from the analyses. … The NIS should not be used for State-level analyses. … The KID cannot be used for readmission analyses.

12. HCUP-US NIS Overview
    hcup-us.ahrq.gov/nisoverview.jsp
    September 01, 2025 - NIS File Structure NIS Areas of Research and HCUP Publications The NIS and Multi-Year or Trend Analyses … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … Changes to the NIS may impact some types of analyses. … Return to Contents   The NIS and Multi-Year or Trends Analyses Spanning more than 20 years … of data, the NIS is ideal for longitudinal analyses.

13. HCUP Frequently Asked Questions
    hcup-us.ahrq.gov/tech_assist/faq.jsp
    September 01, 2025 - Are readmission analyses possible in the nationwide databases? … Can I perform State-level analyses with the NIS? … Are readmission analyses possible with the State databases? … Can State databases be used for county-level analyses? … What are the Supplemental Variables for Revisit Analyses?

14. HCUP Using Multiple Years of Data Tutorial- Accessible Version
    hcup-us.ahrq.gov/tech_assist/trends/508/508course_2019.jsp
    January 01, 2019 - This course presents solutions that may be necessary when conducting analyses that span multiple years … Objective 2 Learn how these changes may affect your analyses when you use multiple years of HCUP … For analyses that span KID data for 1997 and later years, the KID Trends Weights Files is available. … Caution: The HCUP Supplemental Variables for Revisit Analyses (i.e. … The User Guide for the HCUP Supplemental Variables for Revisit Analyses can be found on the HCUP-US

15. Title: (pdf file)
    hcup-us.ahrq.gov/datainnovations/NYAbstractFinal.pdf
    September 29, 2013 - Complete data sets from hospitals recruited into the project will allow analyses of: • Factors that … Year 2 will be used for refinement of protocols and initial analyses of data. … Year 3 will be devoted to final analyses with published reports and presentations.

16. HCUP_methods_series_cover.ai (pdf file)
    hcup-us.ahrq.gov/reports/methods/2006_2.pdf
    January 01, 2006 - States provide the PNUM data element to allow for constructing person-level analyses, and an encrypted … These analyses use all available records from each database. … These preliminary analyses resulted in approximately 450,000 maternity discharges, 75,000 newborns, … Results of these analyses are presented in Tables 11, 12, and 13. … Although not technically a demographic data element, MRN was also included in these analyses.

17. MAINTAIN AND EXPAND (pdf file)
    hcup-us.ahrq.gov/reports/methods/2011_01.pdf
    January 01, 2011 - HCUP (02/25/11) Method Series on Readmission and Revisit Analyses TABLE OF CONTENTS Introduction … Analyses of repeat hospital visits are possible on select HCUP State Inpatient Databases (SID), State … To facilitate revisit analyses, HCUP has created a timing variable that can be used to identify the … The exclusion of certain types of patients may also be appropriate for certain revisit analyses. … HCUP (02/25/11) Method Series on Readmission and Revisit Analyses C-1 APPENDIX C.

18. State Ambulatory Surgery and Services Databases (SASD)
    hcup-us.ahrq.gov/news/exhibit_booth/sasd_brochure.jsp
    May 01, 2018 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Topics Rely on the SASD to study State-level outpatient surgery issues, including: Analyses … To facilitate multistate comparisons and analyses, data are translated into a uniform, user-friendly … Expand Your Analyses Use HCUP Tools. … Survey Database and the Area Health Resources Files can be linked to some of the SASD to enhance your analyses

19. Enhanced State Data for Analysis and Tracking of Comparative Effectiveness Impact
    hcup-us.ahrq.gov/datainnovations/ny.jsp
    October 01, 2010 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Complete data sets from hospitals recruited into the project will allow analyses of: Factors … Year 2 will be used for refinement of protocols and initial analyses of data. … Year 3 will be devoted to final analyses with published reports and presentations.

20. Sasdbrochure 050218 (pdf file)
    hcup-us.ahrq.gov/news/exhibit_booth/SASDBrochure_050218.pdf
    May 16, 2018 - To facilitate multistate comparisons and analyses, data are translated into a uniform, user-friendly … Your Research Apply more than 100 clinical and nonclinical variables to your research, including: • Analyses … Expand Your Analyses Link to Other Data. … Survey Database and the Area Health Resources Files can be linked to some of the SASD to enhance your analyses