View in EDS

Accuracy and Precision of an Effect Size and Its Variance From a Multilevel Model for Cluster Randomized Trials: A Simulation Study.

Saved in:
Bibliographic Details
Title: Accuracy and Precision of an Effect Size and Its Variance From a Multilevel Model for Cluster Randomized Trials: A Simulation Study.
Authors: Ames, Allison Jennifer1 ajames@uncg.edu
Source: Multivariate Behavioral Research. Jul/Aug2013, Vol. 48 Issue 4, p592-618. 27p.
Subject Terms: Regression analysis, Estimation theory, Mathematical models, Monte Carlo method, Simulation methods & models
Abstract: This article investigates an effect size (MLM ES) and its variance for cluster randomized trials based on parameter estimates from multilevel modeling analysis. Accuracy and precision of MLM ES were evaluated using Monte Carlo simulation methods and compared with the performance of an effect size, computed from summary statistics, proposed by Hedges (2007; Hedges'dB). Simulation results indicated that MLM ES had acceptable accuracy in all conditions, also demonstrating efficiency and consistency. With small sample sizes, MLM ES did not suffer from the same negative bias as Hedges'dBdue to overestimation of between-cluster variance. With large sample sizes, MLM ES and Hedges'dBwere comparable for accuracy and efficiency. Both MLM ES and Hedges'dBshowed considerable bias in some conditions when cluster sizes were unequal. An illustrative example using real data was provided. [ABSTRACT FROM PUBLISHER]
Copyright of Multivariate Behavioral Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
FullText Text:
  Availability: 0
Header DbId: ehh
DbLabel: Education Research Complete
An: 89431799
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Accuracy and Precision of an Effect Size and Its Variance From a Multilevel Model for Cluster Randomized Trials: A Simulation Study.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ames%2C+Allison+Jennifer%22">Ames, Allison Jennifer</searchLink><relatesTo>1</relatesTo><i> ajames@uncg.edu</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Multivariate+Behavioral+Research%22">Multivariate Behavioral Research</searchLink>. Jul/Aug2013, Vol. 48 Issue 4, p592-618. 27p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Regression+analysis%22">Regression analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Estimation+theory%22">Estimation theory</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Monte+Carlo+method%22">Monte Carlo method</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This article investigates an effect size (MLM ES) and its variance for cluster randomized trials based on parameter estimates from multilevel modeling analysis. Accuracy and precision of MLM ES were evaluated using Monte Carlo simulation methods and compared with the performance of an effect size, computed from summary statistics, proposed by Hedges (2007; Hedges'dB). Simulation results indicated that MLM ES had acceptable accuracy in all conditions, also demonstrating efficiency and consistency. With small sample sizes, MLM ES did not suffer from the same negative bias as Hedges'dBdue to overestimation of between-cluster variance. With large sample sizes, MLM ES and Hedges'dBwere comparable for accuracy and efficiency. Both MLM ES and Hedges'dBshowed considerable bias in some conditions when cluster sizes were unequal. An illustrative example using real data was provided. [ABSTRACT FROM PUBLISHER]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Multivariate Behavioral Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=ehh&AN=89431799
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/00273171.2013.802978
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 27
        StartPage: 592
    Subjects:
      – SubjectFull: Regression analysis
        Type: general
      – SubjectFull: Estimation theory
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Monte Carlo method
        Type: general
      – SubjectFull: Simulation methods & models
        Type: general
    Titles:
      – TitleFull: Accuracy and Precision of an Effect Size and Its Variance From a Multilevel Model for Cluster Randomized Trials: A Simulation Study.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ames, Allison Jennifer
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 07
              Text: Jul/Aug2013
              Type: published
              Y: 2013
          Identifiers:
            – Type: issn-print
              Value: 00273171
          Numbering:
            – Type: volume
              Value: 48
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: Multivariate Behavioral Research
              Type: main
ResultId 1