Concept of true and perceived placebo effects.
We often and wrongly equate the response seen in the placebo arm of a clinical trial with the placebo effect.
In order to obtain the true placebo effect, other non-specific effects can be identified by including an untreated control group in clinical trials.
A review of the literature shows that most authors confuse the perceived placebo effect with the true placebo effect.
The true placebo effect is highly variable, depending on several factors that are not fully understood.
A distinction between the perceived and the true placebo effects would be helpful in understanding the complex phenomena involved in a placebo response.
Mots-clés Pascal : Effet placebo, Réalité, Condition opératoire, Concept, Etude comparative, Revue bibliographique, Homme, Pharmacologie
Mots-clés Pascal anglais : Placebo effect, Reality, Operating conditions, Concept, Comparative study, Bibliographic review, Human, Pharmacology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0027618
Code Inist : 002B02A05. Création : 01/03/1996.