Evidence map›Paper›PMID 25376546›Full record

SynthesisSchmerz (Berlin, Germany)2015

[Opioids in chronic noncancer pain-are opioids superior to nonopioid analgesics? A systematic review and meta-analysis of efficacy, tolerability and safety in randomized head-to-head comparisons of opioids versus nonopioid analgesics of at least four week's duration].

P Welsch, C Sommer, M Schiltenwolf, W Häuser

Erratum issued Registry-linked trialAbstract readComparative StudyMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Schmerz (Berlin, Germany), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT02593721 (Hypoalgesic Effect of Median Nerve Neural Mobilization Versus Ibuprofen Pharmacologic Treatment in Patients With Cervicobrachial Pain), which is not on this map. Cited by 19 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 4 pooled it
7.2field-weighted citation impact, top 3% of its field
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.

NCT02593721 phase2 / phase3completednot on this map

Hypoalgesic Effect of Median Nerve Neural Mobilization Versus Ibuprofen Pharmacologic Treatment in Patients With Cervicobrachial Pain

TypeinterventionalSponsorUniversidad Europea de MadridRan2015 to 2015Enrolled50ConditionsCervicobrachial NeuralgiaArmsMedian Nerve Neural Mobilization, Ibuprofen
3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 4 syntheses or guidelines pooled it, 51 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. [The US opioid epidemic is threatening Germany].Schmerz (Berlin, Germany) · 2020
    Article
  13. Article
  14. [The right opioid for my patient].Der Anaesthesist · 2017
    Article
  15. [Knee joint pain with signs of arthrosis].Schmerz (Berlin, Germany) · 2017
    Article
  16. Article
  17. [Opioids for noncancer pain in the elderly].Schmerz (Berlin, Germany) · 2015
    Article
  18. Review
  19. Long-term opioid use in non-cancer pain.Deutsches Arzteblatt international · 2014
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

P WelschStichting Rugzorg Nederland, Ede, Niederlande.
C Sommer
M Schiltenwolf
W Häuser
Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie · DEUniversitätsklinikum Würzburg · DEUniversity Hospital Heidelberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSome leading German pain medicine experts postulate that there is a type of chronic non-cancer pain (CNCP) with an opioid requirement. We tested whether opioids are superior to nonopioid analgesics in the management of CNCP in studies of at least 4 week's duration.

methodsWe screened MEDLINE, Scopus and the Cochrane Central Register of Controlled Trials (CENTRAL) up until October 2013, as well as the reference sections of original studies and systematic reviews of randomised controlled trials (RCTs) of opioids in CNCP. We included double-blind RTCs comparing opioids to nonopioid analgesics of at least 4 week's duration. Relative risks differences (RD) of categorical data and standardized mean differences (SMD) of continuous variables were calculated using a random effects model.

resultsWe included 10 RCTs with 3046 participants. Median study duration was 6 weeks (range 4-12 weeks). Five studies compared tramadol with nonsteroidal anti-inflammatory drugs (NSAIDs) in osteoarthritis pain and one trial compared tramadol to flupirtine in low back pain. Morphine was compared to antidepressants (two studies), an anticonvulsant (one study) and an antiarrhythmic (one study) in different neuropathic pain syndromes. There was no significant difference between opioids and nonopioid analgesics in pain reduction (SMD 0.03 [95 % confidence interval, CI - 0.18, 0.24]; p = 0.76). Nonopioid analgesics were superior to opioids in improving physical function (SMD 0.17 [95 % CI 0.02, 0.32]; p = 0.03). Patients dropped out due to adverse events more frequently with opioids than with nonopioid analgesics (RD 0.09 [95 % CI 0.06, 0.13]; p < 0.0001). There was no significant difference between opioids and nonopioid analgesics in terms of serious adverse events or dropout rates due to lack of efficacy.

conclusionNonopioid analgesics are superior to opioids in terms of improvement of physical function and tolerability in short-term (4-12 weeks) therapy of neuropathic, low back and osteoarthritis pain. Our results do not support the concept of an"opioid-requiring" CNCP. The English full-text version of this article is freely available at SpringerLink (under "Supplemental").

Indexed as

Long-Term CareAnalgesicsAnalgesics, OpioidChronic PainHumansPain MeasurementRandomized Controlled Trials as TopicTreatment OutcomeAnalgesicsAnalgesics, Opioid

Identifiers

PMID25376546
OpenAlexW2122220567

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.