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Perspect Clin Res. 2019 Jul-Sep;10(3):137-139. doi: 10.4103/picr.PICR_91_19.

Study designs: Part 4 - Interventional studies.

Author information

1
Director, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
2
Department of Anaesthesiology, Tata Memorial Centre, Mumbai, Maharashtra, India.

Abstract

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.

KEYWORDS:

Experimental design; randomized controlled trial; research design

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