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  1. (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2002.pdf
    January 01, 2002 - VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  2. (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2004.pdf
    January 01, 2004 - VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  3. hcup-us.ahrq.gov/reports/methods/2007_03.pdf
    January 01, 2007 - Therefore, comparisons between NIS and NHDS estimates utilized two-sample t-tests. … MedPAR data, in contrast, are not derived from a sample. … (MedPAR) with sample estimates (NIS). … smaller standard errors than does a sample such as the NHDS. … Design of the Nationwide Inpatient Sample (NIS), 2004.
  4. Kid 1997 Overview (pdf file)

    hcup-us.ahrq.gov/db/nation/kid/Kid_1997_overview.pdf
    January 01, 1997 - Sample weights for the three types of records, uncomplicated in-hospital births, complicated in-hospital
  5. hcup-us.ahrq.gov/reports/statbriefs/sb170-Operating-Room-Procedures-United-States-2011.pdf
    January 01, 2011 - based upon data from the Healthcare Cost and Utilization Project (HCUP) 2011 Nationwide Inpatient Sample … Services Wyoming Hospital Association About the NIS 11 The HCUP 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.
  6. hcup-us.ahrq.gov/reports/statbriefs/sb88.pdf
    March 01, 2010 - of Health Services Wyoming Hospital Association About the NIS The HCUP Nationwide Inpatient Sample … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Introduction to the HCUP Nationwide Inpatient Sample, 2007. Online. June 14, 2009. U.S. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001. … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988–2004).
  7. hcup-us.ahrq.gov/reports/statbriefs/sb97.pdf
    October 01, 2010 - valuable insight for researchers considering excluding stays with extreme charges from their study sample … There are two data elements related to charge available in the Nationwide Inpatient Sample (NIS). … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Introduction to the HCUP Nationwide Inpatient Sample, 2008. Online. July 2010. U.S. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001.
  8. hcup-us.ahrq.gov/reports/statbriefs/sb160.jsp
    August 01, 2013 - The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … HCUPnet generates statistics using data from HCUP's Nationwide Inpatient Sample (NIS), the Kids' Inpatient … Database (KID), the Nationwide Emergency Department Sample (NEDS), the State Inpatient Databases (SID … For a detailed description of HCUP, more information on the design of the Nationwide Inpatient Sample … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001.
  9. hcup-us.ahrq.gov/reports/statbriefs/sb166.pdf
    August 01, 2013 - based upon data from the Healthcare Cost and Utilization Project (HCUP) 2011 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 … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988–2004). … About the NIS About HCUPnet For More Information Introduction to the HCUP Nationwide Inpatient Sample
  10. hcup-us.ahrq.gov/reports/statbriefs/sb25.pdf
    January 01, 2007 - The estimates in this Statistical Brief are based on data from the HCUP 2004 Nationwide Inpatient Sample … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Design of the HCUP Nationwide Inpatient Sample, 2004. Online. August 8, 2006. U.S. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001. … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988-2004).
  11. hcup-us.ahrq.gov/reports/statbriefs/sb160.pdf
    July 01, 2013 - based upon data from the Healthcare Cost and Utilization Project (HCUP) 2011 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 … For a detailed description of HCUP, more information on the design of the Nationwide Inpatient Sample … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001.
  12. hcup-us.ahrq.gov/news/newsletters/newsltrQ4_2017.html
    January 01, 2017 - News and Announcements Now Available: The 2015 National Inpatient Sample (NIS) The 2015 National … Inpatient Sample (NIS) was released in November. … Emergency Department Sample (NEDS) on December 20th. … The 2015 Nationwide Emergency Department Sample (NEDS) will be released December 20. … Adherence to methodological standards in research using the National Inpatient Sample.
  13. hcup-us.ahrq.gov/db/vars/total_disc/nisnote.jsp
    September 01, 2008 - NIS Description of Data Elements   TOTAL_DISC - Number of hospital discharges in the sample … Variable Description Value Value Description TOTAL_DISC Number of hospital discharges in the sample … 5(n) Number of hospital discharges in the sample   Top     State Specific Notes
  14. hcup-us.ahrq.gov/db/vars/total_disc/nrdnote.jsp
    August 01, 2015 - NRD Description of Data Elements   TOTAL_DISC - Number of hospital discharges in the sample … Variable Description Value Value Description TOTAL_DISC Number of hospital discharges in the sample … 5(n) Number of hospital discharges in the sample   Top   Internet
  15. (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2003.pdf
    January 01, 2003 - VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  16. hcup-us.ahrq.gov/db/nation/nis/nis_2003_stspecific_restr.jsp
    January 01, 2003 - Health Information Confidentiality of Hospitals   The Nationwide Inpatient Sample
  17. hcup-us.ahrq.gov/db/nation/nis/NIS_Sources_and_Restrictions_2001.pdf
    January 01, 2001 - VA Virginia Health Information Confidentiality of Hospitals The Nationwide Inpatient Sample
  18. hcup-us.ahrq.gov/news/newsletters/newsltrQ2_2018.html
    January 01, 2018 - News and Announcements Coming Soon: 2016 National Inpatient Sample (NIS), Kids' Inpatient Database … (KID), Nationwide Readmissions Database (NRD), and Nationwide Emergency Department Sample (NEDS) The … This will include the National Inpatient Sample (NIS), Kids’ Inpatient Database (KID), Nationwide Emergency … Department Sample (NEDS), and the Nationwide Readmissions Database (NRD). … This study uses the 2003–2011 Nationwide Inpatient Sample (NIS) and the 2005–2009 State Inpatient
  19. hcup-us.ahrq.gov/reports/methods/2006_8.pdf
    January 01, 2006 - of community hospitals rather than a 20-percent sample as in the NIS. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001. … treat the sample as though it was drawn from an infinite population. … n(g) = Number in the sample for cell g. … n(g) = Number in the sample for cell g.
  20. hcup-us.ahrq.gov/reports/methods/Comparison_Report_NIS61997Final.pdf
    August 09, 2000 - sample. … Since the NHDS estimate was based on a sample, two-sample t-tests were used, where valid estimates of … 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 Sample 22 states 50 states and the District of Columbia By geographic region, control/ownership

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