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Placebo effect and randomized clinical trials

G Elander1, G Hermerén

  • 1Care Research Unit, Lund University, Sweden.

Theoretical Medicine
|June 1, 1995
PubMed
Summary

Achieving optimal therapy in randomized clinical trials (RCTs) requires balancing treatment with placebo effects. This article explores the ethical conflict between informed consent and maximizing placebo effects in RCTs.

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Area of Science:

  • Medical Ethics
  • Clinical Research Methodology

Background:

  • Optimal therapeutic outcomes depend on effective treatments and maximizing placebo effects.
  • Randomized clinical trials (RCTs) aim for experimental rigor, which can sometimes conflict with therapeutic goals.
  • Ethical considerations in RCTs are widely discussed, but the tension between informed consent and placebo effects is under-examined.

Purpose of the Study:

  • To investigate the potential conflict between the goals of therapy and experimental research in RCTs.
  • To examine the ethical and methodological challenges arising from the need to obtain informed consent while optimizing placebo effects.

Main Methods:

  • Literature review and ethical analysis of existing reports on RCTs.
  • Discussion of how information about RCTs is presented to patients.
  • Exploration of the implications of non-optimal placebo effect utilization due to informed consent procedures.

Main Results:

  • A conflict exists between maximizing therapeutic outcomes (including placebo effects) and the requirements of informed consent in RCTs.
  • Providing comprehensive information for informed consent can inadvertently reduce placebo effects.
  • This creates ethical and methodological dilemmas for clinicians and researchers.

Conclusions:

  • There is a need to address the ethical and methodological challenges of balancing informed consent with placebo effects in RCTs.
  • Current practices in RCTs may not adequately reconcile therapeutic aims with experimental integrity.
  • Further discussion and potential solutions are required to navigate this conflict effectively.
Keywords:
Biomedical and Behavioral Research

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