Evidence map›Paper›PMID 19438929›Full record

ArticleCephalalgia : an international journal of headache2009

C-reactive protein in migraine sufferers similar to that of non-migraineurs: the Reykjavik Study.

L S Gudmundsson, T Aspelund, A I Scher, G Thorgeirsson, M Johannsson, L J Launer, V Gudnason

Open access · greenAbstract read
In one paragraph

Article in Cephalalgia : an international journal of headache, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 20% 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.

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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Migraine and mortality: a systematic review and meta-analysis.Cephalalgia : an international journal of headache · 2011
    Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Association between serum high-sensitivity C-reactive protein levels and migraine: a REFORM study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Article
  6. Article
  7. Serological Biomarkers of Chronic Migraine.Current pain and headache reports · 2023
    Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Migraine and subclinical atherosclerosis: endothelial dysfunction biomarkers and carotid intima-media thickness: a case-control study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
    Article
  14. The serum level of inflammatory markers in chronic and episodic migraine: a case-control study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2018
    Article
  15. Migraine and vascular disease biomarkers: A population-based case-control study.Cephalalgia : an international journal of headache · 2018
    Article
  16. Article
  17. Evaluation of carotid intima-media thickness in children with migraine: a marker of subclinical atherosclerosis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2016
    Article
  18. Article
  19. Retinol-binding protein-4 and hs-CRP levels in patients with migraine.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2015
    Article
  20. Effect of Vitamin D supplementation on symptoms and C-reactive protein in migraine patients.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2015
    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

7 authors at 5 institutions in 2 countries.

L S GudmundssonDepartment of Pharmacology and Toxicology, University of Iceland, Hagi Hofsvallagata 53, IS-107 Reykjavik, Iceland. lsg@hi.is
T Aspelund
A I Scher
G Thorgeirsson
M Johannsson
L J Launer
V Gudnason
Icelandic Heart Association · ISNational Institute on Aging · USReykjavík University · ISUniformed Services University of the Health Sciences · USUniversity of Iceland · IS

Funding

CLINICAL PROJECT: Age, Gene/Environment Susceptibility Study on the Multi-omics of Aging: A clinical epidemiologic prospective studyZIAAG007380 · NIA · NATIONAL INSTITUTE ON AGING · PI LAUNER, LENORE J · 2009 to 2025
$6.1M
Age, Gene/Environment Susceptibility StudyZ01AG007380 · NIA · NATIONAL INSTITUTE ON AGING · PI HARRIS, TAMARA B. · 2006 to 2008
$1.3M
Inflammation In DementiaZIAAG007280 · NIA · NATIONAL INSTITUTE ON AGING · PI LAUNER, LENORE J · 2009 to 2010
$104k
Intramural NIH HHS Z01 AG007380
6 · The paper itself

Abstract

C-reactive protein (CRP), a marker of inflammation, has been associated with cardiovascular disease. Risk of cardiovascular disease is increased in migraineurs with aura. Results from a clinical report, case-control and a cohort study suggest that CRP is elevated in migraineurs compared with non-migraineurs. We examined the proposed association in a case-control study nested within two large population-based studies. The relationship between migraine and CRP (high-sensitivity CRP) was studied in 5906 men and women aged 55.0 +/- 8.5 years in the Reykjavik Study and 1345 men and women aged 27.7 +/- 5.5 years from the Reykjavik Study for the Young. A modified version of the International Headache Society's criteria was used to categorize people into migraineurs (two or more symptoms) or non-migraineurs. Migraineurs with visual or sensory symptoms were further defined as having migraine with aura (MA) or without aura (MO). Multivariable-adjusted CRP levels were similar in migraineurs and non-migraineurs for men (0.83 vs. 0.79 mg/l, P = 0.44) and for women (0.87 vs. 0.87 mg/l, P = 0.90). When further stratified by migraine aura and age, no differences were found between non-migraineurs, MO and MA among men. In women, CRP levels were borderline higher in those with MO compared with non-migraineurs and those with MA (1.01 mg/l vs. 0.81 and 0.75 mg/l, P = 0.08 and P = 0.08) in age group 19-34 years, but significantly lower in age group 60-81 years (0.52 mg/l vs. 1.07 and 1.01 mg/l, P = 0.007 and P = 0.03). CRP levels were not increased among migraine sufferers compared with non-migraineurs. Older women migraineurs without aura had lower CRP values than non-migraineurs and migraineurs with aura.

Indexed as

AdultAgedAged, 80 and overCase-Control StudiesC-Reactive ProteinFemaleHumansIcelandMaleMiddle AgedMigraine with AuraMigraine without AuraMultivariate AnalysisPrevalenceRisk FactorsVasculitisC-Reactive Protein

Identifiers

PMID19438929
PMCPMC3133934
OpenAlexW2159773812

What OpenQuestion holds

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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.