Evidence map›Paper›PMID 32334514›Full record

SynthesisThe journal of headache and pain2020

Prevalence of familial cluster headache: a systematic review and meta-analysis.

Emer O'Connor, Benjamin S Simpson, Henry Houlden, Jana Vandrovcova, Manjit Matharu

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in The journal of headache and pain, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

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

  1. Pooled it
  2. The genetics of pain.BJA education · 2024
    Review
  3. Review
  4. Review
  5. Article
  6. Article
  7. The clinical characteristics of familial cluster headache.Cephalalgia : an international journal of headache · 2022
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. 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

5 authors at 2 institutions in 1 country.

Emer O'ConnorDepartment of Neuromuscular Disorders, UCL Institute of Neurology, DMN, Institute of Neurology, Queen Square, London, WC1N 3BG, UK. e.oconnor@ucl.ac.uk.
Benjamin S SimpsonUCL Division of Surgery and Interventional Science, University College London, London, UK.
Henry HouldenDepartment of Neuromuscular Disorders, UCL Institute of Neurology, DMN, Institute of Neurology, Queen Square, London, WC1N 3BG, UK.
Jana VandrovcovaDepartment of Neuromuscular Disorders, UCL Institute of Neurology, DMN, Institute of Neurology, Queen Square, London, WC1N 3BG, UK.
Manjit MatharuHeadache and Facial Pain Group, UCL Institute of Neurology, Queen Square and The National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
National Hospital for Neurology and Neurosurgery · GBUniversity College London · GB

Funding

Medical Research Council G0601943Medical Research Council MR/S005021/1Medical Research Council MR/S01165X/1
6 · The paper itself

Abstract

introductionThe population rate of familial cluster headache (CH) has been reported to be as high as 20% however this varies considerably across studies. To obtain a true estimate of family history in CH, we conducted a systematic review and meta-analysis of previously published data.

methodsOur systematic review involved a search of electronic databases (Medline, EMBASE, PubMed, CINAHL) to identify and appraise studies of interest utilising the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analysis) guidelines. To further ameliorate the accuracy of our analysis we included an additional unpublished cohort of CH patients recruited at a tertiary referral centre for headache, who underwent detailed family history with diagnostic verification in relatives. Data was extracted and meta-analysis conducted to provide a true estimation of family history.

resultsIn total, we identified 7 studies which fulfilled our inclusion criteria. The estimated true prevalence of CH patients with a positive family history was 6.27% (95% CI:4.65-8.40%) with an overall I

conclusionOur findings estimate a rate of family history in CH to be approximately 6.27% (95% CI: 4.65-8.40%). While estimates were larger for female probands, we demonstrated high heterogeneity in this subgroup. These findings further support a genetic role in the aetiology of CH.

Indexed as

Cluster HeadacheCohort StudiesFemaleHumansLongitudinal StudiesMalePrevalenceCluster headacheFamily historyGeneGeneticsHeadacheHeredityHeritabilityInheritanceMeta-analysisSystematic reviewTrigeminal autonomic cephalalgia

Identifiers

PMID32334514
PMCPMC7183702
OpenAlexW3020074247

What OpenQuestion 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 OpenQuestion graph.