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Empirical Estimates Of Design Parameters Used In A Priori Power Analyses For Planning School-Randomized Studies In Select Asian Countries, Ran Shi

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A cluster-randomized trial (CRT) is one type of randomized controlled trial (RCT) that is often more feasible for evaluating the effectiveness of an educational intervention due to the multi-level structure of the data (e.g., students nested in schools). In order for a CRT to generate rigorous evidence, it is essential that is it adequately powered to detect an effect of a given size. As such, it is common for researchers to conduct a priori power analyses to determine how large a sample the CRTs will require to detect an effect of a given magnitude. Previous work has shown that two …