title: Study design VII. Randomised controlled trials.
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.
authors: Child and Adolescent Health Research Unit, University of Edinburgh, Edinburgh, Scotland, UK.
authors: Kate Ann
authors: KA
authors: Levin
mesh_terms: D015982:Bias; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D018401:Sample Size