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Showing results for "design sample size".

121. Future Research Needs for Hematopoietic Stem-Cell Transplantation in the Pediatric Population (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/stem-cell-children-future_research.pdf
     February 01, 2012 - sizes. … sizes. … List of recently published studies Research Gap Study Study Objective Research Design Sample Size … Sample Size; Years; Followup Treatment(s) Outcomes Summary Results confidence interval 0.03- … Sample Size; Years; Followup Treatment(s) Outcomes Summary Results RETINOBLASTOMA Dimaras H,

122. Slide 1
     effectivehealthcare.ahrq.gov/sites/default/files/study-size-planning-chapter-9.pptx
     January 01, 2013 - Sample size and power calculations in the context of randomized controlled trials are relevant for observational … The tyranny of power: is there a better way to calculate sample size? BMJ 2009 Oct 6;339:b3985. … Investigators should also consider other cases whereby the sample size may be reduced—such as loss to … Report the details of the sample size formulas and calculations including correction for loss to followup … Examples include Stata, Confidence Interval Analysis, and Power Analysis and Sample Size (PASS).

123. STATISTICAL BRIEF #518: Treatment and Monitoring of Adults with Diagnosed Diabetes by Race/Ethnicity, 2015-2016
     meps.ahrq.gov/data_files/publications/st518/stat518.shtml
     December 01, 2018 - sizes/unreliable estimates. … sizes/unreliable estimates. … sizes/unreliable estimates. … sizes/unreliable estimates. … sizes/unreliable estimates.

124. 2014-04 (pdf file)
     hcup-us.ahrq.gov/reports/methods/2014-04.pdf
     January 01, 2014 - The sample size remains the same: 20 percent of discharges in the universe. … In our study, the overall sample size of 8 million was chosen for conformance with the current NIS design … so that sample size could be ruled out as a factor in comparing the performance among the alternative … An important consideration in reviewing these results is that the sample sizes vary substantially across … Consequently, RME estimates vary across DRGs in part because of the varying sample sizes.

125. Nisredesignfinalreport040914 (pdf file)
     hcup-us.ahrq.gov/db/nation/nis/reports/NISRedesignFinalReport040914.pdf
     June 11, 2014 - The sample size remains the same: 20 percent of discharges in the universe. … In our study, the overall sample size of 8 million was chosen for conformance with the current NIS design … so that sample size could be ruled out as a factor in comparing the performance among the alternative … An important consideration in reviewing these results is that the sample sizes vary substantially across … Consequently, RME estimates vary across DRGs in part because of the varying sample sizes.

126. Quantitative Synthesis: Chapter 1. Decision To Combine Trials (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/ehc-presentation-quantitative-synthesis-chapter-1.pdf
     July 01, 2019 - recommended to explore variability: ► Clinical intervention ► Control condition ► Participants ► Study design … • Methodological heterogeneity relates to study methods (e.g., study design, measures, conduct). ► … D & E: Consider these high risk of bias situations when pooling a small number of studies: ► Small sample … sizes: Results from small trials are less reliable even when risk of bias is low.6 − If sample sizes … size increases; unreliable if too few studies • Cochrane’s Q and 𝝉𝝉𝟐𝟐: no standardized scale. •

127. STATISTICAL BRIEF #356: Trends in Dermatological Agents Utilization and Expenditures for the U.S. Civilian Noninstitutionalized Population, 1999 and 2008
     meps.ahrq.gov/data_files/publications/st356/stat356.shtml
     February 01, 2012 - and topical emollients (topical antipsoriatics estimates are not included in this Brief due to small sample … size and the unreliability of the estimates). … References For a detailed description of the MEPS-HC survey design, sample design, and methods used … dollars) 198 37 225 99 16 83 27 * Topical antipsoriatics not included in figure due to small sample … size ** Estimate cannot be provided due to small sample size Source: Center for Financing, Access

128. Future Research Needs for Treatment of Obstructive Sleep Apnea (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/sleep-apnea-treatment-future_research.pdf
     February 01, 2012 - size in the thousands, while using surrogate outcomes would need smaller sample sizes. … While a study of mortality would require large sample sizes and long periods of followup, cardiovascular … size in the thousands, while using surrogate outcomes would need smaller sample sizes. … However, these trials generally had small sample sizes (<40 patients in each arm) with less than 1 year … The required total sample sizes (assuming a 1:1 ratio in a two-arm RCT) for pairs of assumptions using

129. Chapter-3 - Sepsis Recognition (pdf file)
     www.ahrq.gov/sites/default/files/wysiwyg/research/findings/making-healthcare-safer/mhs3/sepsis-1.pdf
     March 01, 2020 - Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population … However, two studies had small sample sizes, with accuracy tests calculated on random numbers of negatively … Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population … Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population … Sample size unknown.

130. AHRQ's Guide to Evaluating Health Information Exchange Projects - Section 4 (pdf file)
     digital.ahrq.gov/sites/default/files/docs/page/guide-to-evaluating-hie-projects-section-4.pdf
     June 16, 2021 - often depends on the minimal sample size you need. … You should become familiar with how to determine sample sizes, particularly if you have chosen to include … Large sample size requirements might lead you to exclude certain measures from consideration. … Appendix D offers an example to illustrate the importance of sample size. … Data Collection Plan (Including Power/Sample Size Calculation for Quantitative Measures) e.

131. Medical Expenditure Panel Survey Medical Provider Component Overview
     meps.ahrq.gov/mepsweb/survey_comp/mpc.jsp
     August 23, 2017 - Forms Glossary of terms used in MPC survey questionnaires (PDF, 706 KB)   HTML MEPS-MPC Sample Design … and Data Collection Process MPC Data Collection Schedule Sample sizes Response rates Data

132. Making Healthcare Safer Practices: 16. Venous Thromboembolism (pdf file)
     www.ahrq.gov/sites/default/files/wysiwyg/research/findings/making-healthcare-safer/mhs3/venous-thromboembolism-1.pdf
     March 01, 2020 - Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation

133. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2006
     hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2006.jsp
     January 01, 2006 - 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. … Return to Introduction Hospital Sample Design Design Considerations The NIS is a stratified … 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

134. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2016
     hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2016.jsp
     January 01, 2016 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … The tutorial will be updated in the future to directly address the NASS sampling design. … estimates ( encounter universe ), tabulated in strata used in the sampling design. … Examine the strata with deficient ratios or sample sizes. … The NASS sampling design consists of a stratified, single-stage cluster sample.

135. Established Child Health Care Quality Measures: HEDIS | Agency for Healthcare Research and Quality
     www.ahrq.gov/patient-safety/quality-resources/tools/chtoolbx/measures/measure-4.html
     November 01, 2017 - Databases Service Delivery and Units of Analysis Length-of-Enrollment Requirements Data Issues Sample … Sizes Resource and Burden Issues Development Process Criteria Used More Information and User … encounter or claims data, go to: http://www.ahrq.gov/chtoolbx/develop.htm#encounter Return to Contents Sample … Sizes HEDIS requires samples or groups large enough to produce statistically reliable results.

136. Measuring the Value of Remote ICU Monitoring (pdf file)
     digital.ahrq.gov/sites/default/files/docs/publication/r01hs015234-thomas-final-report-2008.pdf
     January 01, 2008 - Sample Size Determination. … The required sample size ranged from 1622 to 4732 depending on different assumptions about cluster size … The final sample size was 4142 patients, which had 80% power to detect a reduction from 10.5% to 7.8% … Post tele- ICU sampling then continued until the requisite sample size was collected. … The time required to collect its sample size thus varied from hospital to hospital depending upon the

137. Archived: Final Research Plan: Depression in Children and Adolescents: Screening | United States Preventive Services Taskforce
     www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan15/depression-in-children-and-adolescents-screening
     September 15, 2013 - size ≥1,000 Retrospective cohort studies with sample size ≥1,000 Criteria specific to … KQ 6: Prospective cohort studies with a sample size ≥1,000 Retrospective cohort … size <1,000 Retrospective cohort studies with a sample size <1,000 Criteria specific … to KQ 6: Prospective cohort studies with a sample size <1,000 Retrospective cohort … studies with a sample size <1,000 Language English Non-English Date

138. Making Healthcare Safer Practices: 12. Infusion Pumps (pdf file)
     www.ahrq.gov/sites/default/files/wysiwyg/research/findings/making-healthcare-safer/mhs3/infusion-pumps-1.pdf
     March 01, 2020 - Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation Themes … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation Themes … ; Sample Size; Patient Population Setting Outcomes: Benefits Outcomes: Harms Implementation Themes … Author, Year Description of Patient Safety Practice Study Design; Sample Size; Patient Population

139. Methodology Report #28: Construction of Weights for the 2011 Medical Expenditure Panel Survey Insurance Component
     meps.ahrq.gov/data_files/publications/mr28/mr28.shtml
     October 01, 2013 - Additional information on the sampling process can be found in Sample Design of the 2011 Medical Expenditure … development of the probabilities of selection is described in the MEPS Methodology Report: Sample Design … Before 2008, when the retrospective survey design was in place (survey questions asked about prior … However, due to the switch to the current year design, the single-unit business death information was … Sample Design of the 2011 Medical Expenditure Panel Survey Insurance Component .

140. Technical Notes and Survey Documentation – MEPS-IC Data Tools
     datatools.ahrq.gov/meps-ic/technical-notes-and-survey-documentation/
     January 01, 2022 - rotated the samples in the 20 least populated States to insure that every State received an adequate sample … size to make State-level estimates at least once every four years. … The metropolitan statistical areas with a sufficient sample size to support reliable estimates with the … These probabilities vary among establishments and assure that the sample sizes in each stratum are equal … size after nonresponse in stratum h , x hi is the value of a survey variable for establishment i