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  1. hcup-us.ahrq.gov/reports/statbriefs/sb9.pdf
    June 01, 2006 - The estimates in this Statistical Brief are based upon data from the HCUP 2003 Nationwide Inpatient Sample … About the NIS The HCUP Nationwide Inpatient Sample (NIS) is a nationwide database of hospital inpatient … The NIS is a sample of hospitals and it includes all patients from each hospital, regardless of payer … Effective Clinical Practice 5(3):143–51, 2002 Design of the HCUP Nationwide Inpatient Sample, 2003 … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001.
  2. 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.
  3. hcup-us.ahrq.gov/reports/statbriefs/sb62.pdf
    October 10, 2008 - The estimates in this Statistical Brief are based upon data from the HCUP 2006 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, 2005. Online. June 13, 2007. 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).
  4. hcup-us.ahrq.gov/reports/statbriefs/sb238-Emergency-Department-Age-Payer-2006-2015.pdf
    January 01, 2015 - Healthcare Cost and Utilization Project (HCUP), Nationwide Emergency Department Sample (NEDS), 2006– … from the Healthcare Cost and Utilization Project (HCUP) 2006–2015 Nationwide Emergency Department Sample … Census.9 Definitions Types of hospitals included in the HCUP Nationwide Emergency Department Sample … The Nationwide Emergency Department Sample (NEDS) is based on data from community hospitals, which … Overview of the Nationwide Emergency Department Sample (NEDS).
  5. hcup-us.ahrq.gov/reports/statbriefs/sb209-Geographic-Variation-Hospital-Inpatient-Prices.pdf
    November 01, 2015 - Sample (NIS) is based on data from community hospitals, which are defined as short-term, non-Federal … About the NIS The HCUP National Inpatient Sample (NIS) is a national database of hospital inpatient … The redesign incorporates two critical changes:  Revisions to the sample design—starting with … a sample of hospitals from which all discharges were retained (as is the case for NIS years before … Overview of the National (Nationwide) Inpatient Sample (NIS).
  6. hcup-us.ahrq.gov/reports/statbriefs/sb165.jsp
    October 01, 2013 - Historical data were drawn from the 1997 Nationwide Inpatient Sample (NIS). … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … 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. … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988-2004).
  7. hcup-us.ahrq.gov/reports/statbriefs/sb146.pdf
    March 01, 2012 - Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample … Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample … 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).
  8. hcup-us.ahrq.gov/reports/statbriefs/sb130.jsp
    May 01, 2012 - (NIS) and the Nationwide Emergency Department Sample (NEDS) for years between 1993 and 2009. 8 The … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … Introduction to the HCUP Nationwide Emergency Department Sample, 2009. Online. September 2011. … Final Report on Calculating Nationwide Inpatient Sample (NIS) Variances, 2001 . … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988-2004).
  9. 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
  10. 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
  11. 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
  12. hcup-us.ahrq.gov/db/vars/s_brth_u/kidnote.jsp
    September 01, 2008 - QUERY TOOLS KID Description of Data Elements   S_BRTH_U - Number of sample …   Uniform Values Variable Description Value Value Description S_BRTH_U Number of sample … births in STRATUM 6(n) Number of sample births in STRATUM   Top     State Specific
  13. hcup-us.ahrq.gov/db/vars/s_uncb_u/kidnote.jsp
    September 01, 2008 - QUERY TOOLS KID Description of Data Elements   S_UNCB_U - Number of sample …   Uniform Values Variable Description Value Value Description S_UNCB_U Number of sample … uncomplicated births in STRATUM 6(n) Number of sample uncomplicated births in STRATUM   Top
  14. hcup-us.ahrq.gov/db/vars/s_cmpb/kidnote.jsp
    September 01, 2008 - QUERY TOOLS KID Description of Data Elements   S_CMPB_U - Number of sample …   Uniform Values Variable Description Value Value Description S_CMPB_U Number of sample … complicated births in STRATUM 6(n) Number of sample complicated births in STRATUM   Top
  15. hcup-us.ahrq.gov/db/vars/total_disc/kidnote.jsp
    September 01, 2008 - KID 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
  16. 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.
  17. hcup-us.ahrq.gov/reports/statbriefs/sb169-Asthma-Trends-Hospital-Stays.jsp
    January 01, 2014 - It contains data from about 2,000 hospitals and is a 40-percent sample of community, nonrehabilitation … 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. … Using the HCUP Nationwide Inpatient Sample to Estimate Trends. (Updated for 1988–2004).
  18. hcup-us.ahrq.gov/reports/statbriefs/sb206-HIV-Hospital-Stays-Trends.pdf
    November 01, 2015 - (NIS) 2006–2011, National Inpatient Sample (NIS), 2012–2013 … (NIS) 2006–2011, National Inpatient Sample (NIS), 2012–2013 ■ Between 2006 and 2013, the number … (NIS) 2006-2011, National Inpatient Sample (NIS), 2012-2013 ■ Hypertension was the second most … (NIS) for 2012 and 2013 and the Nationwide Inpatient Sample (NIS) for 2006–2011. … Overview of the National (Nationwide) Inpatient Sample (NIS).
  19. hcup-us.ahrq.gov/reports/statbriefs/sb109.pdf
    April 01, 2011 - and Nationwide Emergency Department Sample, 2008 6 Specific ICD-9-CM codes used in this study … (NIS) and 2008 Nationwide Emergency Department Sample (NEDS). … Introduction to the HCUP Nationwide Inpatient Sample, 2008. Online. May 2010. 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).
  20. hcup-us.ahrq.gov/reports/statbriefs/sb182-Medicaid-Uninsured-Hospitalizations-2012.pdf
    January 01, 2012 - ) Inpatient Sample (NIS) is based on data from community hospitals, which are defined as short-term, … The NIS is a sample of hospitals and includes all patients from each hospital, regardless of payer. … The redesign incorporates two critical changes: • Revisions to the sample design—the NIS is now … a sample of discharge records from all HCUP- participating hospitals, rather than a sample of hospitals … Overview of the National (Nationwide) Inpatient Sample (NIS).

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