Journal
JOURNAL OF CLINICAL EPIDEMIOLOGY
Volume 88, Issue -, Pages 7-13Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jclinepi.2016.12.023
Keywords
Real-world evidence; Pragmatic trial; Trial design; Generalizability; Trial conduct; Routine clinical practice
Funding
- Innovative Medicines Initiative [115546]
- European Union's Seventh Framework Programme
- EFPIA
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This is the introductory paper in a series of eight papers. In this series, we integrate the theoretical design options with the practice of conducting pragmatic trials. For most new market-approved treatments, the clinical evidence is insufficient to fully guide physicians and policy makers in choosing the optimal treatment for their patients. Pragmatic trials can fill this gap, by providing evidence on the relative effectiveness of a treatment strategy in routine clinical practice, already in an early phase of development, while maintaining the strength of randomized controlled trials. Selecting the setting, study population, mode of intervention, comparator, and outcome are crucial in designing pragmatic trials. In combination with monitoring and data collection that does not change routine care, this will enable appropriate generalisation to the target patient group in clinical practice. To benefit from the full potential of pragmatic trials, there is a need for guidance and tools in designing these studies while ensuring operational feasibility. This paper introduces the concept of pragmatic trial design. The complex interplay between pragmatic design options, feasibility, stakeholder acceptability, validity, precision, and generalizability will be clarified. In this way, balanced design choices can be made in pragmatic trials with an optimal chance of success in practice. (C) 2017 The Authors. Published by Elsevier Inc.
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