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Randomized Control Trials

By: Harald O. Stolberg, Geoffrey Norman, Isabelle Trop

In this article, Stolberg, Norman, and Trop describe why the randomized controlled trial (RCT) is one of the simplest but most powerful tools of research. A randomized controlled trial is a study in which people are allocated at random to receive one of several interventions or no intervention (control trials). On most occasions, the term “intervention” refers to treatments, or the independent variables being tested. The main appeal of the randomized controlled trial, according to the authors, derives from its potential for reducing allocation bias by researchers.

The article offers valuable insights for researchers and evaluators on the strengths, biases, types, and ethics of RCTs. While the article is written in the context of radiology, its focus on the methodology of RCTs makes it applicable far beyond the health sector.

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Uploaded on: Dec 12, 2013
Last Updated: Dec 04, 2015
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