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  1. www.ahrq.gov/sites/default/files/wysiwyg/data/infographics/emergency-visits-opioids.pdf
    April 02, 2025 - Infographic - More Opioid-Related Emergency Visits, No Change in Illicit Drug Use Treatment This Is a Sample … for Healthcare Research and Quality, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample … and Nationwide Emergency Department Sample, 2017. 2014 177.7 18.3% 2015 *Change not statistically
  2. hcup-us.ahrq.gov/db/nation/nis/NIS_1999_HOSPITAL.pdf
    January 01, 1999 - /172.16.18.243/db/nation/nis/nishospnotes.jsp Description of Data Elements Nationwide Inpatient Sample … Please refer to the Overview of the Nationwide Inpatient Sample for specific information on which states … and hospital weights, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … discharges in STRATUM 6(n) Number of sample discharges in STRATUM State Specific Notes 22 … S_HOSP_U - Number of sample hospitals in STRATUM S_HOSP_U contains the number of sampled hospitals
  3. hcup-us.ahrq.gov/db/nation/neds/NEDS_2006_Introductionv4.pdf
    January 01, 2006 - The main objective of a stratified sample is to ensure that the sample is representative of the target … (universe) ÷ Ns(sample) where Ws(universe) was the ED universe weight, and Ns(universe) and Ns(sample … A larger sample would be cumbersome for data users given that a 20% sample contains over 25 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … HCUP Nationwide Emergency Department Sample (NEDS) Nationwide sample drawn from the HCUP SID and
  4. www.ahrq.gov/research/publications/pubcomguide/pcguide1ape.html
    July 01, 2024 - Appendix 1E: How To Write a Shooting Script for Video  (PDF, 1 MB) Sample Audio Script: Public Service … Announcement  (Word, 33 KB) Sample Video  Script: Public Service  Announcement  (Word, 34 KB) Sample
  5. hcup-us.ahrq.gov/db/nation/neds/NEDS2009Introductionv3.pdf
    September 01, 2011 - (NIS), the NEDS is built using a 20% stratified sample of institutions. … The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … A larger sample would be cumbersome for data users, given that a 20% sample contains over 29 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … of hospital- based EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide sample drawn
  6. hcup-us.ahrq.gov/db/nation/nis/DataElements_NIS_2000_HOSPITAL.pdf
    January 01, 2000 - DataElements_NIS_2000_HOSPITAL.doc Description of Data Elements Nationwide Inpatient Sample … Please refer to the Overview of the Nationwide Inpatient Sample for specific information on which states … HCUP NIS (5/23/02) Description of Data Elements 25 S_HOSP_U - Number of sample hospitals in … Uniform Values Variable Description Value Value Description S_HOSP_U Number of sample hospitals … in NIS_STRATUM nn Number of sample hospitals in NIS_STRATUM State Specific Notes None
  7. hcup-us.ahrq.gov/reports/methods/2006_3.pdf
    January 01, 2006 - The KID sample was drawn from all hospitals within the sample frame using a systematic random sample … The NHDS is a two-stage sample. … The NIS sample featured all discharges from a sample of hospitals in this target universe. … The KID sample was 26 to 42 times larger than the pediatric NHDS sample. … The KID sample was larger than the NHDS pediatric sample by a factor of 26 to 217.
  8. Nis 1998 Hospital (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_1998_Hospital.pdf
    January 01, 1998 - and hospital weights, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … and hospital weights, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … the NIS sampling design, see the year-specific report on the Design of the HCUP Nationwide Inpatient Sample … When sample size was sufficiently large, hospitals were stratified as public, voluntary, and proprietary … General Notes Uniform Values Variable Description Value Value Description S_DISC_U Number of sample
  9. hcup-us.ahrq.gov/figures/nis_figure4_2008.jsp
    January 01, 2008 - Figure 4: Number of Hospitals in the 2006 Universe, Frame, and Sample for Frame States … Figure 4: Number of Hospitals in the 2006 Universe, Frame, and Sample for Frame States States … Hospitals in Universe Number of Hospitals in Frame (and percent of universe) Number of Hospitals in Sample
  10. Summary (pdf file)

    hcup-us.ahrq.gov/reports/methods/KIDComp1997Final.pdf
    March 16, 2001 - Sample Weights Sample weights were developed for the KID to obtain representative national estimates … sample. … All KID and NIS statistics used sample weights and accounted for the sample design using the SUDAAN … discharges from a sample of all discharges. … Census Bureau, Washington, DC. 20233 Summary Introduction KID Data KID Sample Design Sample Weights
  11. hcup-us.ahrq.gov/db/nation/kid/DataElements_KID_2003_HOSPITAL.pdf
    January 01, 2003 - non-births in KID_STRATUM...................... 27 S_CMPB_U - Number of sample complicated births in … KID_STRATUM....................... 28 S_DISC_U - Number of sample discharges in KID_STRATUM ....... … ............................. 29 S_HOSP_U - Number of sample hospitals in KID_STRATUM............... … ....................... 30 S_UNCB_U - Number of sample uncomplicated births in KID_STRATUM ......... … KID_STRATUM 6(n) Number of sample births in KID_STRATUM State Specific Notes None HCUP KID
  12. hcup-us.ahrq.gov/db/nation/kid/reports/KID_design_rpt_2003.jsp
    January 01, 2003 - Sample Design Design Considerations The overall design objective was to select a sample of pediatric … Another strategy is to use sample weight adjustments to compensate for missing values. … "KID Sample Hospitals@ lists the hospitals selected for the KID. … In some instances, strata were collapsed for sample weight calculations. … Different methods are used for calculating variances under the two sample theories.
  13. hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2009.pdf
    January 01, 2009 - (NIS), the NEDS is built using a 20% stratified sample of institutions. … The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … A larger sample would be cumbersome for data users, given that a 20% sample contains over 29 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … of hospital- based EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide sample drawn
  14. hcup-us.ahrq.gov/db/nation/neds/NEDS2011Introduction01142014.pdf
    November 01, 2015 - The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … (universe) ÷ Ns(sample) where Ws(universe) was the ED universe weight, and Ns(universe) and Ns(sample … A larger sample would be cumbersome for data users, given that a 20% sample contains 29 million records … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … Sample (NEDS) Nationwide sample drawn from the HCUP SID and SEDD, stratified and weighted to be
  15. hcup-us.ahrq.gov/db/nation/neds/NEDS2010Introductionv3.pdf
    November 01, 2015 - The NIS is a sample of U.S. hospitals; the NEDS is a sample of U.S. hospital-based EDs. … (universe) ÷ Ns(sample) where Ws(universe) was the ED universe weight, and Ns(universe) and Ns(sample … A larger sample would be cumbersome for data users, given that a 20% sample contains over 29 million … The HCUP Nationwide Inpatient Sample (NIS) uses the same stratified sample design, so techniques appropriate … Sample (NEDS) Nationwide sample drawn from the HCUP SID and SEDD, stratified and weighted to be
  16. hcup-us.ahrq.gov/figures/4_01.jsp
    Figure 4 : Number of Hospitals in the 2003 Universe, Frame, and Sample for Frame States Figure … 4 : Number of Hospitals in the 2001 Universe, Frame, and Sample for Frame States States Number … of Hospitals in Universe Number of Hospitals in Frame Number of Hospitals in Sample Percentage
  17. hcup-us.ahrq.gov/figures/4_02.jsp
    Figure 4 : Number of Hospitals in the 2003 Universe, Frame, and Sample for Frame States Figure … 4 : Number of Hospitals in the 2002 Universe, Frame, and Sample for Frame States States Number … of Hospitals in Universe Number of Hospitals in Frame Number of Hospitals in Sample Percentage
  18. hcup-us.ahrq.gov/db/nation/nis/nistrends.jsp
    May 01, 2015 - 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files and 1993-2011 NIS Trend … NIS-Trend Weights Files   1993-2011 NIS Trend Weights Files and 1993-2002 Nationwide Inpatient Sample … The 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files facilitate analysis … Discharge-Level Files Internet Citation: 1993-2002 Nationwide Inpatient Sample
  19. Kid 1997 Comparison (pdf file)

    hcup-us.ahrq.gov/db/nation/kid/reports/KID_1997_Comparison.pdf
    January 01, 1997 - HCUP KID (01/28/02) 4 Comparative Analysis KID Sample Design The KID is a stratified probability sampleSample Weights Sample weights were developed for the KID to obtain representative national estimates … sample. … All KID and NIS statistics used sample weights and accounted for the sample design using the SUDAAN microcomputer … The pediatric NHDS is less than 4 percent the size of the KID sample, and as a result the number of sample
  20. hcup-us.ahrq.gov/db/nation/neds/NEDS2014Introduction.pdf
    December 12, 2016 - universe) ÷ Ns(sample) where Ws(universe) was the ED universe weight, and Ns(universe) and Ns(sample … A larger sample would be cumbersome for data users, given that a 20 percent sample contains about 30 … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … The HCUP Nationwide Inpatient Sample (NIS) prior to 2012 used stratified sample design similar to the … of EDs HCUP Nationwide Emergency Department Sample (NEDS) Nationwide sample drawn from the HCUP