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Back to Basics - Effects, Narratives and Routes of Administration of Open-label Placebo

Pain Clinical Trial

Official title:
Back to Basics - Effects, Narratives and Routes of Administration of Open-label Placebo

Clinical Trial Summary

To date, very little is known about the mechanisms of open-label placebo treatment and there is a lack in highly controlled experimental designs. Therefore, the planned project will test well-established explanatory models of (deceptive) placebo, i.e., (1) expectancy, (2) meaning response, in an open-label placebo design, investigating their influence on placebo analgesia.

Clinical Trial Description

The current project will consist of one experimental study and one qualitative study:

1. the effects of open-label, and deceptive placebo administration on placebo analgesia will be directly compared when both groups have a comparable expectancy-inducing scientific rationale;

2. subjective meaning models will be assessed by comparing subjective narratives of the placebo effect in open-label and deceptive placebo groups in a nested qualitative study.

The experimental study will be a randomized experiment with healthy subjects (N=120), and pain will be induced using a standardized heat pain paradigm (Medoc, Ramatishai, Israel; thermo-sensory analyzer (TSA)-II). Effects of the experimental conditions will be assessed both objectively (i.e. heat pain threshold and tolerance) and subjectively (i.e. subjective pain ratings, pain intensity and unpleasantness). Furthermore, investigators will randomly select 30 participants to take part in a nested qualitative study in order to qualitatively assess the meaning response by comparing subjective narratives of the placebo effect in the open-label and deceptive placebo groups, as well as in the control group. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02578420
Study type Interventional
Source University Hospital, Basel, Switzerland
Contact
Status Completed
Phase N/A
Start date January 2016
Completion date June 2017
View Details
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