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41. State Emergency Department Databases (SEDD)
    hcup-us.ahrq.gov/news/exhibit_booth/sedd_brochure.jsp
    May 01, 2018 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … To facilitate multistate comparisons and analyses, data are translated into a uniform, user friendly-format … Expand Your Analyses Use HCUP Tools. … Survey Database and the Area Health Resources Files can be linked to some of the SEDD to enhance your analyses

42. NASS Overview
    hcup-us.ahrq.gov/nassoverview.jsp
    July 01, 2025 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … there were some NASS design changes between 2016–2019 that will cause some discontinuity in multi-year analyses … status) Return to Contents   Using the NASS for Trending When conducting longitudinal analyses … For the subset of CCS-Services and Procedures categories affected by NASS design changes, trend analyses … of a file marking different steps while preparing it for analysis and more versions for the actual analyses

43. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_2003_Design_Report_Edited_012506.pdf
    January 01, 2003 - The HCUP NIS team developed the NIS to provide analyses of hospital utilization, charges, and quality … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … These were developed separately for hospital- and discharge-level analyses. … . • DISCWT10 for all analyses. 2000 • DISCWT to create nationwide estimates for all analyses except … . • DISCWT10 for all analyses. 1988-1997 • DISCWT_U for all analyses. • D10CWT_U for all analyses.

44. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_2002_Design_Report.pdf
    January 01, 2002 - The NIS team developed the NIS to provide analyses of hospital utilization, charges, and quality of … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … These were developed separately for hospital- and discharge-level analyses. … . • DISCWT10 for all analyses. 2000 • DISCWT to create nationwide estimates for all analyses except … . • DISCWT10 for all analyses. 1988-1997 • DISCWT_U for all analyses. • D10CWT_U for all analyses.

45. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_2001_Design_Report.pdf
    January 01, 2001 - The NIS team developed the NIS to provide analyses of hospital utilization, charges, and quality of … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … These were developed separately for hospital- and discharge-level analyses. … • DISCWT10 for all analyses 2000 • DISCWT to create nationwide estimates for all analyses except … • DISCWT10 for all analyses 1988-1997 • DISCWT_U for all analyses • D10CWT_U for all analyses

46. Seddbrochure 050218 (pdf file)
    hcup-us.ahrq.gov/news/exhibit_booth/SEDDBrochure_050218.pdf
    May 16, 2018 - To facilitate multistate comparisons and analyses, data are translated into a uniform, user friendly-format … Expand Your Analyses Link to Other data. … Survey Database and the Area Health Resources Files can be linked to some of the SEDD to enhance your analyses

47. Sidbrochure 050218 (pdf file)
    hcup-us.ahrq.gov/news/exhibit_booth/SIDBrochure_050218.pdf
    May 16, 2018 - To facilitate multistate comparisons and analyses, data are translated into a uniform, user-friendly … Expand Your Analyses Link to Other Data. … Survey Database and the Area Health Resources Files can be linked to some of the SID to enhance your analyses

48. HCUP Nationwide Inpatient Sample Design Report 2000
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_2000_Design_Report.jsp
    January 01, 2000 - Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … For the 2000 NIS, DISCWT should be used to create national estimates for all analyses except those that … Consequently, longitudinal analyses of hospital-level outcomes may be biased if they are based on any … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … Several statistical programming packages allow weighted analyses 2 .

49. 2006 05 Nistrendsreport 1988-2004A (pdf file)
    hcup-us.ahrq.gov/reports/methods/2006_05_NISTrendsReport_1988-2004A.pdf
    January 01, 2006 - analyses. … These recodes are unlikely to affect most analyses. … SHOULD WEIGHTS BE INCORPORATED IN TREND ANALYSES? … We use the revised weights throughout these analyses. … In our analyses, we ignore the FPC.

50. 2018 NASS Refinements
    hcup-us.ahrq.gov/db/nation/nass/nassrefinements2018.jsp
    December 21, 2019 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Also, additional analyses revealed an inadequate capture of some procedures, because of an inability

51. HCUP Nationwide Inpatient Sample Design Report 1993
    hcup-us.ahrq.gov/db/nation/nis/reports/NIS_1993_Design_Report.jsp
    January 01, 1993 - Thus, the NIS supports both cross-sectional and longitudinal analyses. … Therefore, sample weights were developed separately for hospital- and discharge-level analyses. … All of these discharge weights can be rescaled if necessary for selected analyses, to sum to the NIS … Given that a very large number of observations will be available for most analyses, it may be feasible … Consequently, longitudinal analyses of hospital-level outcomes may be biased if they are based on any

52. Enhanced State Data Grants
    hcup-us.ahrq.gov/datainnovations/grants.jsp
    July 01, 2016 - health records with missing Social Security numbers and names Constructed a database for conducting analyses … Additional analyses are currently under peer review. … clinically enhanced database, the research team has compared comparative risk-adjusted outcomes and analyses … alternative revascularization procedures using the clinically enhanced administrative database with analyses … The New York team conducted analyses that compared outcome measures, risk-adjustment models, comparative

53. Frequently Asked Questions for Coronary Procedures Project
    hcup-us.ahrq.gov/datainnovations/clinicalcontentenhancementtoolkit/ny14.jsp
    September 01, 2014 - How relevant are analyses of relatively old retrospective data to current clinical performance? … Initial analyses will be performed using historical data starting with data from January 2008 from hospitals … Judicious use of this information can enable hospitals to address quality issues before more rigorous analyses … Data will be requested for all cases that qualify for inclusion in the study based on preliminary analyses … These standards may be altered as POA coding improves nationally based on analyses of the Hospital Cost

54. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2005
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2005.jsp
    January 01, 2005 - (Analyses of time trends are recommended from 1993 forward. … DISCWT10 for all analyses 2000 DISCWT to create nationwide estimates for all analyses … DISCWT10 for all analyses 1988 - 1997 DISCWT_U for all analyses D10CWT_U for … For trends analysis, it is recommended that analyses begin with the 1993 data year. … HCUP Fact Books report aggregate statistics and detailed analyses using HCUP data.

55. Hospital Market Structure Files
    hcup-us.ahrq.gov/toolssoftware/hms/hms.jsp
    March 01, 2022 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Using the merged data elements, hospital market structure measures can then be included in analyses using … Hospital market structure measures are generally useful for performing empirical analyses that examine

56. HCUP-US SID Overview
    hcup-us.ahrq.gov/sidoverview.jsp
    September 01, 2025 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … in participating States, translated into a uniform format to facilitate multi-State comparisons and analyses … State, to compare data from two or more States, to conduct market area research or small variation analyses

57. Healthcare Cost and Utilization Project (HCUP) NASS Notes
    hcup-us.ahrq.gov/db/vars/discwt/nassnote.jsp
    August 01, 2019 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … DISCWT should be used to create national estimates for all analyses except those that involve total charge

58. 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files
    hcup-us.ahrq.gov/db/nation/nis/nistrends2.jsp
    January 01, 2018 - Cost-to-Charge Ratio (CCR) Files Hospital Market Structure (HMS) Files Supplemental Variables for Revisit Analyses … Analyses of time trends using the HCUP NIS are recommended from 1993 forward. … The trend weights were developed for trends analysis, but they can be used for all analyses, as is done … the 1993-2002 NIS Supplemental Discharge Level-Files is to ease the burden on researchers conducting analyses

59. FAQs for Using Clinically Enhanced Claims Data to Guide Selection of Coronary Procedures (pdf file)
    hcup-us.ahrq.gov/datainnovations/clinicalcontentenhancementtoolkit/ny14.pdf
    March 20, 2012 - How relevant are analyses of relatively old retrospective data to current clinical performance? … Initial analyses will be performed using historical data starting with data from January 2008 from hospitals … Judicious use of this information can enable hospitals to address quality issues before more rigorous analyses … Data will be requested for all cases that qualify for inclusion in the study based on preliminary analyses … These standards may be altered as POA coding improves nationally based on analyses of the Hospital

60. 2017-01 (pdf file)
    hcup-us.ahrq.gov/reports/methods/2017-01.pdf
    January 01, 2017 - The NRD is designed to be flexible to various types of analyses of national readmissions for all types … Importantly, analyses must incorporate statistical precision of national estimates based on the NRD … It is designed to be flexible to various types of analyses of readmissions. … However, the NRD is not designed to support regional, State-, or hospital-specific readmission analyses … The definitions of the readmission rate were specific to the purpose of the analyses.