Evidence map›Paper›PMID 41533694›Full record

ArticlePloS one2026

Placebo and nocebo in clinical practice: An online cross-sectional survey of healthcare professionals from European countries on views, practices and training needs.

Mary O'Keeffe, Nathan Skidmore, Arianna Bagnis, Przemysław Bąbel, Elżbieta A Bajcar, Alessandra De Palma, Andrea W M Evers, Eveliina Glogan, Julia W Haas, Stefanie H Meeuwis and 5 more

Abstract read
In one paragraph

Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Mary O'KeeffeUCD School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland.ORCID 0000-0001-7104-9248
Nathan SkidmoreEuropean Pain Federation EFIC, Brussels, Belgium.ORCID 0000-0002-7477-6720
Arianna BagnisDepartment of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.ORCID 0000-0002-5588-6000
Przemysław BąbelPain Research Group, Institute of Psychology, Jagiellonian University, Kraków, Poland.
Elżbieta A BajcarPain Research Group, Institute of Psychology, Jagiellonian University, Kraków, Poland.
Alessandra De PalmaIRCCS Azienda Ospedaliero-Universitaria di Bologna, Policlinico di Sant'Orsola, Bologna, Italy.ORCID 0000-0001-5516-5708
Andrea W M EversInstitute of Psychology, Leiden University, Leiden, the Netherlands.
Eveliina GloganFaculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium.ORCID 0000-0002-2608-4121
Julia W HaasFaculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium.
Stefanie H MeeuwisInstitute of Psychology, Leiden University, Leiden, the Netherlands.
Marek OleszczykDepartment of Family Medicine, Jagiellonian University Medical College, Krakow, Poland.
Antonio PortolésDepartment of Farmacología y Toxicología, Universidad Complutense Madrid, Madrid, Spain.ORCID 0000-0002-5646-5275
Johan W S VlaeyenFaculty of Psychology and Educational Sciences, KU Leuven, Leuven, Belgium.
Katia MattarozziDepartment of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
PANACEA Consortium

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlacebo and nocebo effects significantly influence health outcomes, yet healthcare professionals receive limited training and guidance on their mechanisms and clinical application, creating a gap in education and practical understanding. Conducted within the European PANACEA Consortium, this study evaluated healthcare professionals' knowledge, attitudes, and practices regarding placebo and nocebo effects, and assessed their needs in further education.

methodsAn online cross-sectional survey among a European multi-country convenience sample of healthcare professionals collected data assessing participants' knowledge, perceptions, and experiences regarding placebo and nocebo effects; their application and ethical considerations in clinical practice; and investigated educational needs and interest in further training. Quantitative data were analyzed using descriptive statistics, and thematic analysis was applied to the free-text responses.

resultsAmongst 807 participants, 71.7% reported taking advantage of placebo effects in their practice, and over half of participants (55.8%) observing nocebo effects. Participants reported feeling somewhat confident (53.3%) in harnessing placebo effects with 47.5% feeling confident in preventing nocebo effects. The majority of respondents had not received formal training on placebo and nocebo effects, with most expressing an interest in further training in areas such as healthcare education, emphasizing communication skills to enhance placebo effects, and knowledge to recognize and reduce nocebo effects.

conclusionsThere is a significant need for more comprehensive training on placebo and nocebo effects, particularly in early health professional education. These findings informed the development of educational resources and best practice recommendations developed as part of the outcomes from the PANACEA Consortium, improving the understanding and application of these effects among healthcare professionals across Europe.

Indexed as

Health Knowledge, Attitudes, PracticeHealth PersonnelNocebo EffectPlacebo EffectAdultAttitude of Health PersonnelCross-Sectional StudiesEuropeFemaleHumansMaleMiddle AgedSurveys and Questionnaires

Identifiers

PMID41533694
PMCPMC12834211

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.