W. Li, N. Dong, Rebecca Maynarad, Jessaca K. Spybrook, Ben Kelcey
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引用次数: 0
Abstract
Abstract Cluster randomized trials (CRTs) are commonly used to evaluate educational interventions, particularly their effectiveness. Recently there has been greater emphasis on using these trials to explore cost-effectiveness. However, methods for establishing the power of cluster randomized cost-effectiveness trials (CRCETs) are limited. This study develops power computation formulas and statistical software to help researchers plan two- and three-level CRCETs. We illustrate the application of our formulas and software for the designs of CRCETs and discuss the influence of sample size, nesting effects, covariates, and the covariance between cost and effectiveness measures on the statistical power of cost-effectiveness estimates.
期刊介绍：
As the flagship publication for the Society for Research on Educational Effectiveness, the Journal of Research on Educational Effectiveness (JREE) publishes original articles from the multidisciplinary community of researchers who are committed to applying principles of scientific inquiry to the study of educational problems. Articles published in JREE should advance our knowledge of factors important for educational success and/or improve our ability to conduct further disciplined studies of pressing educational problems. JREE welcomes manuscripts that fit into one of the following categories: (1) intervention, evaluation, and policy studies; (2) theory, contexts, and mechanisms; and (3) methodological studies. The first category includes studies that focus on process and implementation and seek to demonstrate causal claims in educational research. The second category includes meta-analyses and syntheses, descriptive studies that illuminate educational conditions and contexts, and studies that rigorously investigate education processes and mechanism. The third category includes studies that advance our understanding of theoretical and technical features of measurement and research design and describe advances in data analysis and data modeling. To establish a stronger connection between scientific evidence and educational practice, studies submitted to JREE should focus on pressing problems found in classrooms and schools. Studies that help advance our understanding and demonstrate effectiveness related to challenges in reading, mathematics education, and science education are especially welcome as are studies related to cognitive functions, social processes, organizational factors, and cultural features that mediate and/or moderate critical educational outcomes. On occasion, invited responses to JREE articles and rejoinders to those responses will be included in an issue.
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