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Optimal Design in Cluster-Randomized Trials of Cross-Level Mediation
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Shen, Zuchao; Kelcey, Benjamin; Cox, Kyle T.; Zhang, Jiaqi – AERA Online Paper Repository, 2017
Recent studies show cluster randomized trials may be well powered to detect mediation or indirect effects in multilevel settings. However, literature has rarely provided guidance on designing cluster-randomized trials aim to assess indirect effects. In this study, we developed closed-form expression to estimate the variance of and the statistical…
Descriptors: Randomized Controlled Trials, Research Design, Context Effect, Statistical Analysis