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Optimizing the design of pragmatic trials: key issues remain
1United BioSource Corporation, Lexington, MA, USA and Montreal, PQ, Canada;430 Bedford Street, Suite 300, Lexington, MA 02420, USA.
Abstract:
Clinical trials have largely focused on whether an intervention can work. To ensure valid and powerful testing of this hypothesis, trials attempt to maximize the effect of the intervention of interest, controlling other factors that can confound comparisons. The benefits observed in these studies are often not sustained once the treatment is used in routine care, leaving regulators, practitioners and patients with a paucity of reliable evidence to assist decision-making. Attempts to address this need have led to 'pragmatic trials' that prioritize applicability of findings to real-world practice by minimizing design features that produce less pertinent information. Minimizing biases in this pragmatic context remains a very difficult task, however. This paper reviews some of these challenges and highlights specific aspects of design that must be approached with a pragmatic attitude.
Insights
Clinical trials often show benefits that don't last in real-world practice. This paper discusses challenges in designing pragmatic trials to ensure findings are applicable and reliable for decision-making.
Area of Science:
- Clinical Research Methodology
- Evidence-Based Practice
Background:
- Traditional clinical trials prioritize maximizing intervention effects, often limiting real-world applicability.
- Observed treatment benefits in controlled settings frequently diminish in routine care.
- A gap exists in reliable evidence for decision-making in clinical practice.
Purpose of the Study:
- To review challenges in designing pragmatic trials.
- To highlight design aspects requiring a pragmatic approach for real-world applicability.
- To improve the reliability of evidence for clinical decision-making.
Main Methods:
- Review of challenges in pragmatic trial design.
- Analysis of design features impacting real-world applicability.
- Discussion of bias minimization in pragmatic research.
Main Results:
- Pragmatic trials aim to enhance the generalizability of findings to routine practice.
- Minimizing design features that limit applicability is key in pragmatic trials.
- Addressing biases remains a significant challenge in pragmatic trial design.
Conclusions:
- Pragmatic trial design is crucial for bridging the gap between research and practice.
- A pragmatic approach to design is essential for generating applicable and reliable evidence.
- Careful consideration of design aspects is needed to overcome challenges in pragmatic trials.
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