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  1. hcup-us.ahrq.gov/HCUP_Overview/HCUP_Overview/index508.jsp
    October 01, 2022 - Sample Size The NIS contains a sample of over 7 million hospital discharge records taken from more … the Nationwide Inpatient Sample. … " Inpatient Sample (NIS). … Sample The NIS is a sample of discharges while the SID includes all discharges from all or nearly all … Sample vs.
  2. hcup-us.ahrq.gov/reports/methods/2018-01.pdf
    January 01, 2018 - HCUP Nationwide Emergency Department Sample (NEDS). … In addition, the 20 percent sample of the hospitals in the HCUP Nationwide Inpatient Sample (NIS) did … (which was redesigned with a new sample strategy that selects a sample of discharge records from all … n(g) = Number in the sample for cell g. … n(g) = Number in the sample for cell g.
  3. hcup-us.ahrq.gov/db/nation/nis/NIS94_Overview_122104.pdf
    November 01, 2015 - Agency for Healthcare Research and Quality OVERVIEW OF THE HCUP NATIONWIDE INPATIENT SAMPLE … ................................................................... 2 HCUP NATIONWIDE INPATIENT SAMPLE … .................................................... 3 Correction to the 1993 Nationwide Inpatient Sample … HCUP-3 Nationwide Inpatient Sample (NIS), Release 3 ABSTRACT The Nationwide Inpatient Sample … NIS, Release 3 approximates a 20 percent sample of U.S. community hospitals for 1994.
  4. hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2000.pdf
    January 01, 2000 - GA GHA: An Association of Hospitals & Health Systems Confidentiality of Hospitals The sample … ethnicity HI Hawaii Health Information Corporation Confidentiality of Hospitals The sample … IL Illinois Health Care Cost Containment Council Confidentiality of Hospitals The sample … restrictions MO Hospital Industry Data Institute Confidentiality of Hospitals The sample … VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  5. hcup-us.ahrq.gov/reports/statbriefs/sb177-Hospitalizations-for-Opioid-Overuse.jsp
    August 01, 2014 - Databases (SID) that was designed to provide national estimates using weighted records from a sample … on hospitals, is a separate file from the 2012 National Inpatient Sample (NIS), which uses a sampling … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001. … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988-2004).
  6. hcup-us.ahrq.gov/reports/methods/2017-03.pdf
    January 01, 2017 - HCUP Nationwide Emergency Department Sample (NEDS). … In addition, the 20 percent sample of the hospitals in the HCUP Nationwide Inpatient Sample (NIS) did … (which was redesigned with a new sample strategy that selects a sample of discharge records from all … n(g) = Number in the sample for cell g. … n(g) = Number in the sample for cell g.
  7. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1996RECLWT.txt
    February 12, 1998 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  8. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1997RECLWT.txt
    November 12, 1999 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  9. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1994RECLWT.txt
    December 06, 1996 - 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  10. hcup-us.ahrq.gov/db/nation/nis/tools/stats/1995RECLWT.txt
    February 12, 1998 - 28 STRAT_ST 219 223 Num H:Stratum for state-specific weights 29 S_DISC_S 224 230 Num H:Num. sample … discharges in STRAT_ST 30 S_DISC_U 231 237 Num H:Num. sample discharges in STRATUM 31 S_HOSP_S … 238 240 Num H:Num. sample hospitals in STRAT_ST 32 S_HOSP_U 241 243 Num H:Num. sample hospitals
  11. hcup-us.ahrq.gov/news/exhibit_booth/HCUPOverviewPresentation2020Update.pdf
    April 01, 2020 - Databases Nationwide Readmissions Database (NRD) Nationwide Ambulatory Surgery Sample (NASS) … NEDS: Sample of hospital-owned EDs* from all SEDD and includes all ED admissions from the SID for the … State Ambulatory Surgery and Services Databases (SASD) NIS: Sample inpatient discharges of all … ages from all SID and community hospitals* KID: Sample inpatient discharges aged <= 20 years old … of Discharges from the SID Stratified Sample of Discharges *State not included in the stratum
  12. hcup-us.ahrq.gov/overview.jsp
    February 01, 2022 - HCUP databases include: The National (Nationwide) Inpatient Sample (NIS) containing data on more … The Kids' Inpatient Database (KID) is a nationwide sample of pediatric inpatient discharges. … Nationwide Ambulatory Surgery Sample (NASS) is a set of ambulatory surgery databases. … The Nationwide Emergency Department Sample (NEDS) is a database that yields national estimates of emergency
  13. hcup-us.ahrq.gov/db/vars/discwt10/nisnote.jsp
    September 01, 2008 - DATA QUERY TOOLS NIS Description of Data Elements   DISCWT10 - 10% sample … Specific Notes General Notes   DISCWT10 is the discharge-level weight on the 10% NIS Sample … discharge and hospital weights, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … Top   Uniform Values Variable Description Value Value Description DISCWT10 10% sample … weight to discharges in the universe nnn.nnnn 10% sample weight to discharges in the universe.
  14. hcup-us.ahrq.gov/db/vars/d10cwt_u/nisnote.jsp
    September 10, 2008 - DATA QUERY TOOLS NIS Description of Data Elements   D10CWT_U - 10% sample … Specific Notes General Notes   D10CWT_U is the discharge-level weight on the 10% NIS Sample … discharge and hospital weights, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … Top   Uniform Values Variable Description Value Value Description D10CWT_U 10% sample … weight to discharges in the universe nnn.nnnn 10% sample weight to discharges in the universe  
  15. hcup-us.ahrq.gov/reports/methods/2016-01.pdf
    January 01, 2016 - HCUP Nationwide Emergency Department Sample (NEDS). … In addition, the 20 percent sample of the hospitals in the HCUP Nationwide Inpatient Sample (NIS) did … (which was redesigned with a new sample strategy that selects a sample of discharge records from all … n(g) = Number in the sample for cell g. … n(g) = Number in the sample for cell g.
  16. hcup-us.ahrq.gov/reports/statbriefs/sb171-Operating-Room-Procedure-Trends.jsp
    March 01, 2014 - data from the Healthcare Cost and Utilization Project (HCUP) 2001 through 2011 Nationwide Inpatient Sample … community hospital, the discharge record for that stay will be included in the Nationwide Inpatient Sample … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Database (KID), the Nationwide Emergency Department Sample (NEDS), the State Inpatient Databases (SID … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001.
  17. hcup-us.ahrq.gov/reports/methods/2004_6_appendix_D.pdf
    January 01, 2004 - For the NHDS, estimates based on a sample size less than 60 records were surpressed. … For the NHDS, estimates based on a sample size less than 60 records were surpressed. … For the NHDS, estimates based on a sample size less than 60 records were surpressed. … For the NHDS, estimates based on a sample size less than 60 records were surpressed. … Estimates for the total U.S. are from the HCUP Nationwide Inpatient Sample (NIS).
  18. hcup-us.ahrq.gov/reports/methods/Comparison_Report_NIS41995Final.pdf
    December 21, 1998 - sample. … Since the NHDS estimate was based on a sample, two-sample t- tests were used, as described in the Appendix … All NIS statistics used sample weights and accounted for the sample design using the SUDAAN microcomputer … This is expected because the sample of NIS hospitals was stratified on most of these variables, and sampleSample or Universe Sample Sample Sampling Frame 19 states 50 states and the District of Columbia
  19. hcup-us.ahrq.gov/reports/natstats/his96/clinclas.htm
    September 01, 1999 - The NIS approximates a 20-percent sample of U.S. … Nationwide Inpatient Sample (NIS) . … The NIS is designed to be a 20-percent sample of U.S. … The HCUP sample is a stratified probability sample of hospitals in the frame, with sampling probabilities … Study sample The entire sample of NIS discharges for 1996 was used for this study (N = 6,542,069).
  20. hcup-us.ahrq.gov/db/nation/nrd/stats/MaskedStats_NRD_2019_Hospital.PDF
    January 01, 2019 - Number of universe hospitals in NRD_STRATUM 2,507 0 5.00 351.00 87.66 65 219,773 S_DISC_U : Number of sample … October 8, 2021 8 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … October 8, 2021 9 Univariates of Selected Continuous Data Elements Variable: S_DISC_U (Number of sample … October 8, 2021 10 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample … October 8, 2021 11 Univariates of Selected Continuous Data Elements Variable: S_HOSP_U (Number of sample

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