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Design
Educational review
Clarifies interventional study features for clinicians; leaves open the need for updated syntheses amid evolving trial methods.
In the fourth piece of this series on research study designs, we look at interventional studies (clinical trials). These studies differ from observational studies in that the investigator decides whether or not a participant will receive the exposure (or intervention). In this article, we describe the key features and types of interventional studies.
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Aggarwal et al. (2019) studied this question.
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