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Published on: December 14, 2014
The placebo effect for gastroenterology: tool or torment
1Inflammatory Bowel Disease Clinical and Research Centre, University of Manitoba, Winnipeg, Manitoba, Canada. cbernst@cc.umanitoba.ca
Summary
Placebos, often viewed negatively, have positive aspects that can improve patient outcomes in gastrointestinal diseases. Understanding placebo response components helps clinicians and trial designers optimize treatments and study designs.
Area of Science:
- Gastroenterology
- Clinical Pharmacology
- Medical Psychology
Background:
- Placebo often carries a negative connotation in clinical practice and research.
- This report explores the nature of placebo, particularly in gastrointestinal diseases, highlighting its beneficial aspects.
- A review of PubMed and selected placebo-controlled trials in gastroenterology provides insights.
Purpose of the Study:
- To explore the nature and positive aspects of placebo in general and for gastrointestinal diseases.
- To identify key components and factors influencing the placebo response.
- To provide guidance for clinicians and clinical trial planners regarding the placebo effect.
Main Methods:
- Literature search of PubMed for articles, commentaries, and systematic reviews on placebo.
- Review of selected placebo-controlled trials in gastroenterology.
- Analysis of factors contributing to the placebo response.
Main Results:
- Five key components impact placebo response: patient, practitioner, interaction, illness, and treatment/setting.
- Factors constituting the placebo response include natural history, regression to the mean, time effects, parallel interventions, agent comparison, and physiological effects.
- Placebo response has positive aspects applicable to clinical practice and research.
Conclusions:
- Clinicians can leverage placebo response aspects to enhance patient outcomes in gastrointestinal diseases.
- Clinical trial planners can utilize understanding of placebo response to design disease-specific trials that minimize its effect.
- Harnessing the placebo response offers opportunities for improved therapeutic strategies and research methodologies.
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