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  1. hcup-us.ahrq.gov/db/vars/apsdrg/nisnote.jsp
    September 01, 2008 - General Notes   The All-Payer Severity-adjusted DRGs (APS-DRGs) are assigned using software developed … This severity measure includes the APS-DRG group number and weights developed using the NIS for mortality
  2. hcup-us.ahrq.gov/datainnovations/raceethnicitytoolkit/home_race.jsp
    September 01, 2014 - The toolkit is based on the materials developed by, and the experiences of, three AHRQ Enhanced State … Staff Data Improvement through Data Linkages and Data Validation About the Grants (includes tools developed
  3. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1996_Design_Report.jsp
    January 01, 1996 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … For instance, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research … statistics and their standard errors from survey data: OSIRIS IV was developed by L. … SUPER CARP (Cluster Analysis and Regression Program) was developed at Iowa State University by W.
  4. hcup-us.ahrq.gov/db/nation/nis/trendwghts.jsp
    June 01, 2024 - In order to facilitate analysis of trends using multiple years of NIS data, AHRQ developed new discharge … The trend weights were developed for trends analysis, but they can be used for all analyses, as is done … new trend weights replace the earlier NIS Trend Weights and NIS Trends Supplemental Files that were developed … While TRENDWT was developed for trends analysis, it can be used for all analyses, as is done on the
  5. hcup-us.ahrq.gov/overviewcourse.jsp
    July 01, 2025 - HCUP has developed a free, interactive course, which is available online.
  6. HCUP PROJECT (pdf file)

    hcup-us.ahrq.gov/news/exhibit_booth/HCUPFactSheet.pdf
    March 23, 2022 - HCUP is a family of healthcare databases and related software tools and products developed through a … How are the HCUP databases developed? … Software Tools and Supplemental Files are developed by AHRQ to enhance the value of the HCUP databases
  7. hcup-us.ahrq.gov/toolssoftware/util_flags/utilflag.jsp
    July 01, 2025 - Utilization Flags Utilization Flag software is one in a family of databases and software tools developed … codes, and Clinical Classifications Software (CCS) procedure categories, 30 utilization flags were developed … Utilization Flags for ICD-10-PCS Procedures The beta version of the Utilization Flags for ICD-10-PCS was developed
  8. hcup-us.ahrq.gov/reports/natstats/his.htm
    December 01, 1998 - A four-level system was developed for diagnoses and a three-level system was developed for procedures
  9. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1998_Design_Report.pdf
    January 01, 1998 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Hospital-level weights were developed to weight NIS sample hospitals to the hospital universe. … Also, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research Triangle … Further, the sample weights were developed as annual, cross-sectional weights rather than longitudinal
  10. Ahrqfinalreportvhi (pdf file)

    hcup-us.ahrq.gov/datainnovations/clinicaldata/AHRQFINALREPORTVHI.pdf
    December 01, 2009 - Materials/tools developed for hospitals We developed a host of materials including business associate … Project websites VHI developed www.vhi.org/hybriddata.asp for this project. … In the early stages of the project, VHI developed a technical survey (see Attachment 2) to assess the … VHI developed several key materials to help ensure hospital participation: The full recruitment … An analytical dataset was developed, delivered and preliminary analysis was conducted.
  11. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1992_1988_Design_Report.jsp
    January 01, 1992 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Similarly, three discharge-level weights were developed to weight NIS sample discharges to the state, … statistics and their standard errors from survey data: OSIRIS IV was developed by L. … SUDAAN, a set of SAS subroutines, was developed at the Research Triangle Institute by B. V. Shah. … SUPER CARP (Cluster Analysis and Regression Program) was developed at Iowa State University by W.
  12. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1998_Design_Report.jsp
    January 01, 1998 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Hospital-level weights were developed to weight NIS sample hospitals to the hospital universe. … Also, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research Triangle … Further, the sample weights were developed as annual, cross-sectional weights rather than longitudinal
  13. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1999_Design_Report.pdf
    January 01, 1999 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Hospital-level weights were developed to weight NIS sample hospitals to the hospital universe. … Also, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research Triangle … Further, the sample weights were developed as annual, cross-sectional weights rather than longitudinal
  14. hcup-us.ahrq.gov/reports/infographics/neonatal-abstinence-syndrome.pdf
    January 01, 2016 - Tese trends are taken from HCUP’s State Inpatient Databases, which are developed through a Federal-State
  15. hcup-us.ahrq.gov/toolssoftware/surgeryflags_svcproc/SF-SvcProc-ChgLg-v20241-v20251.xlsx
    June 01, 2025 - CPT is a proprietary coding system developed by the American Medical Association (AMA).
  16. hcup-us.ahrq.gov/toolssoftware/hms/HMSUserGuide1997.pdf
    January 10, 2007 - The measures developed for 1997 were compared with the corresponding measures developed when the 1997 … data was used in the study noted previously and the measures developed for 2000 and 2003.
  17. hcup-us.ahrq.gov/toolssoftware/hms/HMSUserGuide2000.pdf
    January 10, 2007 - The measures developed for 2000 were compared with the corresponding measures developed when 1997 data … was used in the study noted previously and measures developed for 1997 and 2003.
  18. hcup-us.ahrq.gov/kidoverview.jsp
    July 01, 2025 - (KID) The Kids' Inpatient Database (KID) is part of a family of databases and software tools developedDeveloped through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research … analysis of trends including the 1997 KID, a new set of KID discharge weights for the 1997 HCUP KID were developed
  19. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1997_Design_Report.pdf
    January 01, 1997 - Sample weights were developed to obtain national 30 November 1999 Design of the NIS, 19972 estimates … Consequently, a recursive procedure was developed to update the sample from year to year in a way that … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Similarly, three discharge-level weights were developed to weight NIS sample discharges to the state, … For instance, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research
  20. hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1997_Design_Report.jsp
    January 01, 1997 - Sample weights were developed to obtain national estimates of hospital and inpatient parameters. … Consequently, a recursive procedure was developed to update the sample from year to year in a way that … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Similarly, three discharge-level weights were developed to weight NIS sample discharges to the state, … For instance, OSIRIS IV, developed at the University of Michigan, and SUDAAN, developed at the Research

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