Standardized Effect Size Measures for Mediation Analysis in Cluster-Randomized Trials.
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| Title: | Standardized Effect Size Measures for Mediation Analysis in Cluster-Randomized Trials. |
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| Authors: | Stapleton, Laura M. (AUTHOR), Pituch, Keenan A. (AUTHOR), Dion, Eric (AUTHOR) |
| Source: | Journal of Experimental Education. 2015, Vol. 83 Issue 4, p547-582. 36p. 4 Diagrams, 4 Charts. |
| Subjects: | Effect sizes (Statistics), Cluster analysis (Statistics), Multilevel models, Regression analysis, Mediation (Statistics) |
| Abstract: | This article presents 3 standardized effect size measures to use when sharing results of an analysis of mediation of treatment effects for cluster-randomized trials. The authors discuss 3 examples of mediation analysis (upper-level mediation, cross-level mediation, and cross-level mediation with a contextual effect) with demonstration of the calculation and interpretation of the effect size measures using a simulated dataset and an empirical dataset from a cluster-randomized trial of peer tutoring. SAS syntax is provided for parametric percentile bootstrapped confidence intervals of the effect sizes. The use of any of the 3 standardized effect size measures depends on the nature of the inference the researcher wishes to make within a single site, across the broad population, or at the site level. [ABSTRACT FROM PUBLISHER] |
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| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | This article presents 3 standardized effect size measures to use when sharing results of an analysis of mediation of treatment effects for cluster-randomized trials. The authors discuss 3 examples of mediation analysis (upper-level mediation, cross-level mediation, and cross-level mediation with a contextual effect) with demonstration of the calculation and interpretation of the effect size measures using a simulated dataset and an empirical dataset from a cluster-randomized trial of peer tutoring. SAS syntax is provided for parametric percentile bootstrapped confidence intervals of the effect sizes. The use of any of the 3 standardized effect size measures depends on the nature of the inference the researcher wishes to make within a single site, across the broad population, or at the site level. [ABSTRACT FROM PUBLISHER] |
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| ISSN: | 00220973 |
| DOI: | 10.1080/00220973.2014.919569 |
