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Pronunciation: ko-in-ter-ven'shun

Definition: Application of additional diagnostic and/or therapeutic procedures to members of either the study group or control group in a randomized controlled trial. Such additional interventions besides those that are formally included in the study may introduce confounding variables and erode the validity of the results of the trial.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.