U.S. flag

An official website of the Department of Health & Human Services

AHRQ: Agency for Healthcare Research and Quality

Search AHRQ

For an exact phrase match, enclose search terms in double quotes.

Go to Advanced Search
Go to Basic Search

Results

Total Results: 712 records

Showing results for "design sample size".

  1. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_2007_INTRODUCTION.pdf
    January 01, 2007 - The NIS' large sample size enables analyses of rare conditions, such as congenital anomalies; uncommon … The sampling design consisted of a stratified, single-stage cluster sample. … Hospital Sample Design Design Considerations The NIS is a stratified probability sample of hospitals … This sample size was determined by AHRQ based on their experience with similar research databases. … While this approach was admittedly less efficient, the extremely large sample sizes yield reliable estimates

  2. HCUP_methods_series_cover.ai (pdf file)

    hcup-us.ahrq.gov/reports/methods/2005_03_del_379.pdf
    January 01, 2005 - Although the smaller sample size rendered NHDS estimates less precise than NIS estimates, the complete … Because of the limited sample size, valid estimates were not available for all breakdowns of the NHDS … We must emphasize that the NIS provides a large sample size that tends to yield estimates with much … Because NIS estimates have greater precision – the result of the large sample size – it may be preferred … Where a comprehensive geographic representation is more important than a large sample size, and the

  3. Introduction To The HCUP Nationwide Emergency Department Sample (NEDS) 2021 (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDSIntroduction2021.pdf
    March 01, 2024 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Non-trauma or trauma center level III (beginning in the 2011 NEDS) 7: Trauma center level … sizes 6: Any urban-rural location (used in the South in 2014) 7: Small metropolitan and micropolitan

  4. 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 … estimates (encounter universe), tabulated in strata used in the sampling design. … • Examine the strata with deficient ratios or sample sizes. … Census region was considered as an essential stratum to include in the design. … The NASS sampling design consists of a stratified, single- stage cluster sample.

  5. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDS2014Introduction.pdf
    December 12, 2016 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … • The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Nontrauma or trauma center level III (beginning in the 2011 NEDS) 8: Trauma center level … sizes: (6) Any urban-rural location, (7) Small Metro and Micro, (8) Metropolitan (large and small),

  6. THE HCUP NATIONWIDE EMERGENCY DEPARTMENT SAMPLE (NEDS), 2015

    hcup-us.ahrq.gov/db/nation/neds/NEDS_Introduction_2015.jsp
    January 01, 2015 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Nontrauma or trauma center level III (beginning in the 2011 NEDS) 8 … sizes 6: Any urban-rural location (used in the South only in 2014) 7: Small

  7. Kid 1997 Designreport (pdf file)

    hcup-us.ahrq.gov/db/nation/kid/reports/Kid_1997_designreport.pdf
    January 01, 1997 - HCUP KIDS’ INPATIENT DATABASE DESIGN REPORT, 1997 HCUP KID (01/28/02) Design Report TABLE OF CONTENTS … HCUP KID (01/28/02) Design Report6 Design Requirements For the KID nationwide sample, we sampled 10 … HCUP KID (01/28/02) Design Report13 HCUP KID (01/28/02) Design Report14 HCUP KID (01/28/02) Design … HCUP KID (01/28/02) Design Reportt19 HCUP KID (01/28/02) Design Report20 Discharge-Level Sampling … "Equivalent Sample Size" and "Equivalent Degrees of Freedom" Refinements for Inference Using Survey Weights

  8. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDS2018Introduction.pdf
    November 01, 2020 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … • The HCUP Sample Design tutorial is designed to help users learn how to account for sample design … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Nontrauma or trauma center level III (beginning in the 2011 NEDS) 7: Trauma center level … size and/or a coefficient of variation >30 percent.

  9. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDS2019Introduction.pdf
    September 01, 2021 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Nontrauma or trauma center level III (beginning in the 2011 NEDS) 7: Trauma center level … size and/or a coefficient of variation >30 percent.

  10. Introduction to the NASS, 2022 (pdf file)

    hcup-us.ahrq.gov/db/nation/nass/NASSIntroduction2022.pdf
    December 01, 2024 - • The HCUP Sample Design tutorial is designed to help users learn how to account for sample design … The tutorial will be updated in the future to directly address the NASS sampling design. … volume estimates (encounter universe), tabulated in strata used in the sampling design. … The NASS sampling design consists of a stratified, single- stage cluster sample. … and changes to the design over time

  11. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_2009_INTRODUCTION.pdf
    January 01, 2009 - The NIS' large sample size enables analyses of rare conditions, such as specific types of cancer; uncommon … The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design in … Hospital Sample Design Design Considerations The NIS is a stratified probability sample of hospitals … This sample size was determined by AHRQ based on their experience with similar research databases. … While this approach was admittedly less efficient, the extremely large sample sizes yield reliable estimates

  12. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2010.pdf
    November 01, 2015 - The NIS' large sample size enables analyses of rare conditions, such as specific types of cancer; uncommon … The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design in … Hospital Sample Design Design Considerations The NIS is a stratified probability sample of hospitals … This sample size was determined by AHRQ based on their experience with similar research databases. … While this approach was admittedly less efficient, the extremely large sample sizes yield reliable estimates

  13. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2011.pdf
    January 01, 2011 - The NIS' large sample size enables analyses of rare conditions, such as specific types of cancer; uncommon … The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design in … Hospital Sample Design Design Considerations The NIS is a stratified probability sample of hospitals … This sample size was determined by AHRQ based on their experience with similar research databases. … While this approach was admittedly less efficient, the extremely large sample sizes yield reliable estimates

  14. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDS2020Introduction.pdf
    September 01, 2022 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Nontrauma or trauma center level III (beginning in the 2011 NEDS) 7: Trauma center level … size and/or a coefficient of variation >30 percent.

  15. 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 - Finally, because the NIS was not designed to be representative at the State level, design-based estimates

  16. Introduction to the NEDS (pdf file)

    hcup-us.ahrq.gov/db/nation/neds/NEDSIntroduction2022.pdf
    November 01, 2024 - One of the most distinctive features of the NEDS is its large sample size, which allows for analysis … The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in their … A sample size of 20 percent was based on previous experience with similar research databases. … sizes 4: Non-trauma or trauma center level III (beginning in the 2011 NEDS) 7: Trauma center level … sizes 6: Any urban-rural location (used in the South in 2014) 7: Small metropolitan and micropolitan

  17. 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 - For detailed information about the NIS sampling design, see the year-specific report on the Design of … When sample size was sufficiently large, hospitals were stratified as public, voluntary, and proprietary … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of … For detailed information about the NIS sampling design, see the year-specific report on the Design of

  18. NASS Overview

    hcup-us.ahrq.gov/nassoverview.jsp
    July 01, 2025 - In addition, there were some NASS design changes between 2016–2019 that will cause some discontinuity … conducting longitudinal analyses, users should exercise caution and consider several aspects of the NASS design … and changes to the design over time. … For the subset of CCS-Services and Procedures categories affected by NASS design changes, trend analyses

  19. Stataload Neds 2007V2 Hospital

    hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2007v2_Hospital.Do
    April 12, 2010 - /***************************************************************************** * Stataload_NEDS_2007_Hospital.Do * This program will load the 2007 NEDS CSV Hospital File into Stata. * Because Stata loads the entire file into memory, it may not be possible * to load every data element for large files. If necessary,…

  20. Stataload Neds 2006 Hospital

    hcup-us.ahrq.gov/db/nation/neds/pgms/StataLoad_NEDS_2006_Hospital.Do
    January 01, 2006 - /***************************************************************************** * Stataload_NEDS_2006_Hospital.Do * This program will load the 2006 NEDS CSV Hospital File into Stata. * Because Stata loads the entire file into memory, it may not be possible * to load every data element for large files. If necessary,…
SHARE:
Facebook Twitter Print Facebook Share

Search the AHRQ Archive

Information and reports more than 5 years old may be found in the AHRQ Archive site.

Search Archive

Search Within A Specific AHRQ Site

You selected to view results for the following site:

View results from all sites