Randomized controlled trial/Definition
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Work consisting of a clinical trial that involves at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.
This definition is at least in part based on: Anonymous (2025), Randomized controlled trial (English). Medical Subject Headings. U.S. National Library of Medicine.