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cluster randomization
cluster randomization Cluster randomization is a study design in which groups, or clusters, rather than individual people are assigned during an evaluation of interventions such as health-care, screening, or educational programs.
Cluster randomization is a study design in which groups, or clusters, rather than individual people are assigned during an evaluation of interventions such as health-care, screening, or educational programs. In this approach, the sizes of the groups may differ, which can matter when planning the study.