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161. INTRODUCTION TO THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2019 (pdf file)
     hcup-us.ahrq.gov/db/nation/nass/2019_NASS_Introduction.pdf
     January 01, 2019 - Weights are provided to calculate national estimates totaling 11.8 million ambulatory surgery encounters … To accurately calculate variances from the NASS, appropriate statistical software and techniques must … Several computer programs that calculate statistics and their variances from sample survey data are … However, it may be desirable to calculate variances using formulas specifically developed for certain … Examples of the use of SAS, SUDAAN, and Stata to calculate NIS variances are presented in the special

162. Hcupnet Readmissions Methodology (pdf file)
     hcup-us.ahrq.gov/tech_assist/data_query/HCUPnet_Readmissions_Methodology.pdf
     November 01, 2012 - Methods Calculating Readmissions for HCUPnet This document provides details on the methods used to calculate

163. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2020
     hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2020.jsp
     January 01, 2020 - Weights are provided to calculate national estimates totaling 10.3 million ambulatory surgery encounters … To accurately calculate variances from the NASS, appropriate statistical software and techniques must … However, it may be desirable to calculate variances using formulas specifically developed for certain … Examples of the use of SAS, SUDAAN, and Stata to calculate NIS variances are presented in the special … For a helpful review of programs to calculate statistics from survey data, visit the following website

164. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2019
     hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2019.jsp
     January 01, 2019 - Weights are provided to calculate national estimates totaling 11.8 million ambulatory surgery encounters … To accurately calculate variances from the NASS, appropriate statistical software and techniques must … However, it may be desirable to calculate variances using formulas specifically developed for certain … Examples of the use of SAS, SUDAAN, and Stata to calculate NIS variances are presented in the special … For a helpful review of programs to calculate statistics from survey data, visit the following website

165. ___APS-DRGs-Weights_Public.book (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/APS-DRGsWeightsV25Public.pdf
     June 01, 2009 - CALCULATE AND APPLY TRIMS Initial outlier trim points were calculated at 3.0 standard deviations from … CALCULATE RELATIVE WEIGHTS The final, post-imputation estimated average LOS, charge, and mortality for … To calculate an expected charge (expected LOS, or expected mortality) for a given discharge record,

166. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/NIS_2008_INTRODUCTION.pdf
     January 01, 2008 - Weights are provided to calculate national estimates. …  Discharge-level weights to calculate national estimates for discharges. … Variance Calculations It may be important for researchers to calculate a measure of precision for … Several computer programs are listed below that calculate statistics and their variances from sample … Beginning in 1998, we calculate discharges as the sum of hospital admissions (AHA data element ADMH)

167. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2013
     hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2013.jsp
     January 01, 2013 - Weights are provided to calculate national estimates. … Weights are provided to calculate national estimates. … Discharge–level weights to calculate national estimates for discharges. … Return to Introduction Variance Calculations It may be important for researchers to calculate a … Several computer programs are listed below that calculate statistics and their variances from sample

168. C:\unzipped\Methods Series Reports to Convert\Comparison_Report_NIS4 1995.wpd (pdf file)
     hcup-us.ahrq.gov/reports/methods/Comparison_Report_NIS41995Final.pdf
     December 21, 1998 - weights and accounted for the sample design using the SUDAAN microcomputer statistical software to calculate … two sources because the discharge counts are essentially sums of discharge weights, which are used to calculate … performed because a valid standard error was not available. b The NHDS sample size was too small to calculate … performed because a valid standard error was not available. b The NHDS sample size was too small to calculate … performed because a valid standard error was not available. b The NHDS sample size was too small to calculate

169. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/kid/KID_2006_Introduction.pdf
     January 01, 2006 - • Discharge-level weights to calculate national estimates for discharges. … Variance Calculations It may be important for researchers to calculate a measure of precision for … Several computer programs that calculate statistics and their variances from sample survey data are … Therefore, researchers will not be able to calculate hospital-specific outcomes with certainty. … Beginning with the 2003 KID, use DISCWT to calculate nationwide estimates for all analyses.

170. Microsoft Word - NHDR6-HCUPMethodsReport v7.doc (pdf file)
     hcup-us.ahrq.gov/reports/methods/2008_06.pdf
     January 01, 2008 - cases from the QI measures: • The PSIs and PDIs that use secondary procedure day were modified to calculate … • For QIs that use present on admission (POA), we modified the AHRQ QI software to calculate indicators … Note: the following functions calculate p in SAS and EXCEL: SAS: p = 2 * (1 - PROBNORM(ABS(t)));

171. Release of the 2018 Nationwide Emergency Department Sample (NEDS) (November 2020)
     hcup-us.ahrq.gov/news/announcements/neds_2018.jsp
     January 01, 2018 - Weights are provided to calculate national estimates pertaining to approximately 143 million ED visits

172. HCUP Facts and Figures 2007: Statistics on Hospital-Based Care in the United States
     hcup-us.ahrq.gov/reports/factsandfigures/2007/more_info.jsp
     January 01, 2007 - Information For a detailed description of HCUP, information on the design of the NIS, and methods to calculate

173. HCUP Facts and Figures 2009: Statistics on Hospital-Based Care in the United States
     hcup-us.ahrq.gov/reports/factsandfigures/2009/more_info.jsp
     January 01, 2009 - Information For a detailed description of HCUP, information on the design of the NIS, and methods to calculate

174. HCUP Facts and Figures 2008: Statistics on Hospital-Based Care in the United States
     hcup-us.ahrq.gov/reports/factsandfigures/2008/more_info.jsp
     January 01, 2008 - Information For a detailed description of HCUP, information on the design of the NIS, and methods to calculate

175. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2007
     hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2007.jsp
     January 01, 2007 - The NIS is drawn from those States participating in HCUP and weights are provided to calculate national … Discharge-level weights to calculate national estimates for discharges. … Variance Calculations It may be important for researchers to calculate a measure of precision for … Several computer programs are listed below that calculate statistics and their variances from sample … Examples of the use of SAS, SUDAAN, and STATA to calculate NIS variances are presented in the special

176. Calculating National Inpatient Sample (NIS) Variances for Data Years 2012 and Later (pdf file)
     hcup-us.ahrq.gov/reports/methods/MS2015-09%20Addendum.pdf
     December 10, 2022 - Calculating National Inpatient Sample (NIS) Variances for Data Years 2012 and Later HCUP (12/10/22) Addendum Methods Series Report #2015-09 Addendum to Healthcare Cost and utilization Project (HCUP) Methods Series Report #2015-09 Calculating National Inpatient Sample (NIS) Variances for Data Years 2…

177. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2015.pdf
     January 01, 2015 - Variance Calculations • It may be important for researchers to calculate a measure of precision for … Several computer programs are listed below that calculate statistics and their variances from sample … However, it may be desirable to calculate variances using formulas specifically developed for some … Examples of the use of SAS and Stata to calculate NIS variances are presented in the special report … For an excellent review of programs to calculate statistics from survey data, visit the following Web

178. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2017
     hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2017.jsp
     January 01, 2017 - Weights are provided to calculate national and encounter-level estimates representing about 145 million … Variance Calculations It may be important for researchers to calculate a measure of precision for … To accurately calculate variances from the NEDS, appropriate statistical software and techniques must … Several computer programs that calculate statistics and their variances from sample survey data are … However, it may be desirable to calculate variances using formulas specifically developed for certain

179. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2016
     hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2016.jsp
     January 01, 2016 - Weights are provided to calculate national and encounter-level estimates representing 144 million ED … Variance Calculations It may be important for researchers to calculate a measure of precision for … To accurately calculate variances from the NEDS, appropriate statistical software and techniques must … Several computer programs that calculate statistics and their variances from sample survey data are … However, it may be desirable to calculate variances using formulas specifically developed for certain

180. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/NIS_2007_INTRODUCTION.pdf
     January 01, 2007 - The NIS is drawn from those States participating in HCUP and weights are provided to calculate national …  Discharge-level weights to calculate national estimates for discharges. … Variance Calculations It may be important for researchers to calculate a measure of precision for … Several computer programs are listed below that calculate statistics and their variances from sample … Beginning in 1998, we calculate discharges as the sum of hospital admissions (AHA data element ADMH)