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Total Results: 1,768 records

Showing results for "sample".

181. MAINTAIN AND EXPAND (pdf file)
     hcup-us.ahrq.gov/reports/methods/1998ChangesintheNISRedesignFinal.pdf
     January 18, 2002 - Sample Weights In prior versions of the NIS, sample weights were developed separately for hospital … Summary of Changes Sample Design The new sample design is similar to the previous design. … Sample Size We will continue to sample a number of hospitals equal to 20 percent of the universe … We drew a NIS sample using the new sample design. … Summary of Changes Sample Design Sample Weights Sample Design Longitudinal Component Comparison

182. 1993-2002 Nationwide Inpatient Sample (NIS) Supplemental Discharge-Level Files and 1993-2011 NIS Trend Weights Files
     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

183. HCUP_methods_series_cover.ai (pdf file)
     hcup-us.ahrq.gov/reports/methods/TrendReport2005_1.pdf
     March 19, 2004 - Using the HCUP Nationwide Inpatient Sample to Estimate Trends. … 6,156,188 Total sample discharges* 1992 No states added 11 40 856 6,008,001 6,195,744 Total sample … Consequently, the effect on sample estimates will be small. … Even in statistical routines that fail to account for the sample design, the sample weights can usually … Instead, the sample design must be modeled.

184. HCUP-US Methods Series
     hcup-us.ahrq.gov/reports/methods/methods.jsp
     February 01, 2025 - ) Report #2017-02 Feasibility Report on Redesigning the Nationwide Emergency Department Sample … with 2012 HCUP Data) (PDF file, 429 KB) Report #2015-04 2012 National Inpatient Sample … 2013 HCUP Data) (PDF file, 542 KB) Report #2015-09 Calculating National Inpatient Sample … ( PDF file, 502 KB; Excel file, 156 KB) Report #2014-04 Nationwide Inpatient Sample … , 2006 (PDF file, 248 KB)   2008 Report #2008-01 2005 HCUP Nationwide Inpatient Sample

185. http://172.16.18.243/db/nation/nis/nishospnotes.jsp (pdf file)
     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

186. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/nass/2018_NASS_Introduction.pdf
     January 01, 2018 - • The HCUP Sample Design tutorial is designed to help users learn how to account for sample design … On the basis of the set of NASS sample hospitals and universe totals, sample weights are computed that … Computation of sample weights is straightforward. … universe to sample encounter volumes so that the sample volume is inflated to agree with the universe … NASS Target Universe, Sampling Frame, and Final Sample Characteristics, 2018 Sample Description

187. Why the NIS should not be used to make State-level estimates
     hcup-us.ahrq.gov/db/nation/nis/nis_statelevelestimates.jsp
     January 01, 2016 - However, these NIS samples were not designed to yield a representative sample of hospitals at the State … Each NIS sample is drawn from the sampling frame consisting of discharge data submitted by HCUP Partners—statewide … Consequently, the sample of NIS hospitals is unlikely to be representative of hospitals in the State, … and the NIS sample weights will not be appropriate at the State level. … Moreover, the NIS is composed of all discharges from a sample of hospitals (a cluster sample).

188. Design of the HCUP KIDS' Inpatient Database (KID), 2003
     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.

189. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS2007v2IntroductionRevised.pdf
     November 01, 2015 - 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 … Sample (NEDS) Nationwide sample drawn from the HCUP SID and SEDD, stratified and weighted to be

190. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS2008Introductionv3.pdf
     November 01, 2015 - 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 28 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

191. 2014-04 (pdf file)
     hcup-us.ahrq.gov/reports/methods/2014-04.pdf
     January 01, 2014 - The systematic sample is a self-weighted sample design that is similar to simple random sampling, but … Switching to the systematic sample design from the present NIS sample design7 2. … Switching to the systematic sample design from the present NIS sample design16 2. … sample designs. … sample (SYS).

192. Nisredesignfinalreport040914 (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/reports/NISRedesignFinalReport040914.pdf
     June 11, 2014 - The systematic sample is a self-weighted sample design that is similar to simple random sampling, but … Switching to the systematic sample design from the present NIS sample design7 2. … Switching to the systematic sample design from the present NIS sample design16 2. … sample designs. … sample (SYS).

193. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS_2006v2_IntroductionRevised.pdf
     November 01, 2015 - 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 … Sample (NEDS) Nationwide sample drawn from the HCUP SID and SEDD, stratified and weighted to be

194. Microsoft Word - NEDS_2007_Introduction v5.doc (pdf file)
     hcup-us.ahrq.gov/db/nation/neds/NEDS_2007_Introduction_v5.pdf
     January 01, 2007 - 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 … Sample (NEDS) Nationwide sample drawn from the HCUP SID and SEDD, stratified and weighted to be

195. Microsoft Word - NEDS_2006_Introduction v4.doc (pdf file)
     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

196. Infographic - More Opioid-Related Emergency Visits, No Change in Illicit Drug Use Treatment (pdf file)
     hcup-us.ahrq.gov/reports/infographics/SAMSHA_opioids.pdf
     January 18, 2022 - 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

197. NASS Overview
     hcup-us.ahrq.gov/nassoverview.jsp
     July 01, 2025 - QUERY TOOLS NASS Overview   Overview of the Nationwide Ambulatory Surgery Sample … (NASS) The Nationwide Ambulatory Surgery Sample (NASS) is part of a family of databases and software … Changes to the procedures considered in scope for the NASS sample can change from year to year. … facilities located in 33 States and the District of Columbia, approximating a 65-percent stratified sample … Procedures considered in scope for the NASS sample can change from year to year.

198. HCUP National Estimates Tutorial - Accessible Version
     hcup-us.ahrq.gov/tech_assist/nationalestimates/508_course/508course_2023.jsp
     January 01, 2023 - HCUP Sample Design tutorial. … HCUP Sample Design tutorial. … Surgery Sample (NASS)! … HCUP Sample Design tutorial. … HCUP Sample Design tutorial.

199. HCUP Overview Course - Accessible Version
     hcup-us.ahrq.gov/HCUP_Overview/HCUP_Overview/index508.jsp
     September 01, 2025 - 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.

200. AHRQ Slide Template 2019-Regular (pdf file)
     hcup-us.ahrq.gov/news/exhibit_booth/HCUPOverviewDeck_121422.pdf
     February 09, 2022 - NIS: Sample inpatient discharges of all ages from all SID and community hospitals* KID: Sample inpatient … KID Sample Design The KID is a systematic random sample design, 10 percent uncomplicated … Sampling StrataStarting HCUP Database Sample Design NEDS Sample Design The NEDS is drawn from SEDD … NEDS Sample Design Sampling StrataStarting HCUP Database Sample Design The NRD is a 100 percent … sample of discharges from the SID, after certain discharge and hospital exclusions.