Evidence map›Paper›PMID 29266544›Full record

ArticleEuropean journal of pain (London, England)2018

Expectations about the effectiveness of pain- and itch-relieving medication administered via different routes.

K J Peerdeman, J Tekampe, A I M van Laarhoven, H van Middendorp, R C A Rippe, M L Peters, A W M Evers

Abstract read
In one paragraph

Article in European journal of pain (London, England), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. [Placebo and nocebo effects on itch : Methodological and clinical implications].Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete · 2018
    Review
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

7 authors.

K J PeerdemanHealth, Medical and Neuropsychology Unit, Leiden University, The Netherlands.
J TekampeHealth, Medical and Neuropsychology Unit, Leiden University, The Netherlands.
A I M van LaarhovenHealth, Medical and Neuropsychology Unit, Leiden University, The Netherlands.
H van MiddendorpHealth, Medical and Neuropsychology Unit, Leiden University, The Netherlands.
R C A RippeCentre for Child and Family Studies, Leiden University, The Netherlands.
M L PetersDepartment of Clinical Psychological Science, Maastricht University, The Netherlands.
A W M EversHealth, Medical and Neuropsychology Unit, Leiden University, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlacebo effects on pain have been found to vary in size for different routes of medication administration (e.g. oral vs. injection). This has important implications for both clinical research and practice. To enhance our understanding of these differential placebo effects, research on the underlying expectations about multiple routes and symptoms other than pain is vital.

methodsA cross-sectional, Internet-based survey was conducted in a representative sample of the Dutch population (n = 508). Respondents rated the expected effectiveness of pain- and itch-relieving medication in six forms, representing oral, injection and topical routes of administration.

resultsInjected medication was expected to be most effective for relieving pain, and topical medication for relieving itch. Furthermore, exploratory analyses showed that injections were expected to have the most rapid onset and long-lasting effects, and to be most frightening and expensive, while topical medication was expected to be the safest and the easiest to use, and oral medication was expected to have the most side effects. Higher expected effectiveness was moderately associated with expectations of more rapid onset and long-lasting effects, and better safety and ease of use. Associations of expected effectiveness with respondent characteristics (e.g. medication use and personality characteristics) were statistically small or nonsignificant.

conclusionsExpected effectiveness of medication differed depending on route of administration and targeted symptom. These findings have important implications for the design and interpretation of clinical trials and suggest that medication effects might be enhanced by prescribing medicine via the route that patients expect to be most effective for their complaint. SIGNIFICANCE: Differences in the expected effectiveness of medication depend on the route of administration (oral, injection, topical) and targeted symptom (pain, itch). These findings have important implications for clinical practice and the design and interpretation of clinical trials.

Indexed as

MotivationAcetaminophenAdolescentAdultAgedCross-Sectional StudiesDrug Administration RoutesFemaleHumansMaleMiddle AgedPainPain ManagementPruritusSurveys and QuestionnairesYoung AdultAcetaminophen

Identifiers

PMID29266544
PMCPMC5873387

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Registered trials

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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 OpenQuestion graph.