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• 19:51, 25 March 2025 Lawrence talk contribs created page Cluster randomized trials (Created page with "== Cluster randomized trials == Cluster Randomized Trials (CRTs) are a type of randomized controlled trial in which groups of individuals—rather than individuals themselves—are randomized to intervention or control arms. Clusters may include units such as hospitals, schools, communities, or geographic regions. This design is particularly suited for interventions delivered at the group level, when individual randomization is infeasible or risks contamination between...")