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Evidence-Based Dentistry (2007) 8, 22–23. doi:10.1038/sj.ebd.6400473
Study design VII. Randomised controlled trials
Kate Ann Levin1
1Child and Adolescent Health Research Unit, University of Edinburgh, Edinburgh, Scotland, UK
Abstract
Previously in this series, I have given an overview of the main types of study design and the techniques used to minimise the likelihood of obtaining biased results. In this article I describe more fully randomised controlled trials, their uses, advantages and limitations.
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