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Related Experiment Videos

Placebo effects in primary insomnia.

Michael L Perlis1, W Vaughn McCall, Carla R Jungquist

  • 1Sleep and Neurophysiology Research Laboratory, Department of Psychiatry, University of Rochester, 300 Crittenden Blvd. Rochester, NY 14642, USA. michael_perlis@urmc.rochester.edu

Sleep Medicine Reviews
|August 20, 2005
PubMed
Summary
This summary is machine-generated.

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Placebo effects in insomnia clinical trials are robust and durable, especially in longer studies. Understanding these effects and insomnia

Area of Science:

  • Sleep Medicine
  • Clinical Psychology
  • Psychopharmacology

Background:

  • Placebo effects are frequently observed in insomnia clinical trials.
  • These effects demonstrate significant robustness and durability, particularly in extended trial durations.

Purpose of the Study:

  • To review established factors contributing to placebo effects.
  • To examine the operation of these factors within insomnia randomized clinical trials.
  • To propose novel mechanisms sustaining long-term placebo effects in insomnia.

Main Methods:

  • Literature review of classic placebo effect factors.
  • Analysis of placebo effects in the context of insomnia randomized clinical trials.
  • Theoretical exploration of insomnia's episodic nature and intermittent dosing preferences.

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Main Results:

  • Classic factors influencing placebo effects were reviewed.
  • The interaction between insomnia's episodic nature and patient dosing preferences may sustain long-term placebo effects.
  • This sustained effect can enhance the detection of therapeutic outcomes.

Conclusions:

  • The episodic nature of insomnia and patient preferences for intermittent dosing can sustain placebo effects.
  • Understanding and leveraging these sustained placebo effects can potentiate clinical gains in insomnia treatment.
  • Further research into these mechanisms can improve the power of clinical trials.