Evidence map›Paper›PMID 30944141›Full record

ArticleBMJ open2019

Risk of ischaemic stroke in patients with migraine: a longitudinal follow-up study using a national sample cohort in South Korea.

Sang-Yeon Lee, Jae-Sung Lim, Dong Jun Oh, Il Gyu Kong, Hyo Geun Choi

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

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  14. Migraine as a Risk Factor for Peripheral Artery Occlusive Disease: A Population-Based Cohort Study.International journal of environmental research and public health · 2020
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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 3 institutions in 1 country.

Sang-Yeon LeeDepartment of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Jongno-gu, The Republic of Korea.
Jae-Sung LimDepartment of Neurology, Hallym University Sacred Heart Hospital, Anyang, The Republic of Korea.
Dong Jun OhDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul-si, The Republic of Korea.
Il Gyu Kong
Hyo Geun ChoiDepartment of Laboratory Medicine, HallymUniversity Sacred Heart Hospital, Anyang, The Republic of Korea.
Hallym University Sacred Heart Hospital · KRSeoul National University Hospital · KRUniversity of Ulsan · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAccumulating evidence has supported the association between migraine and stroke, but the causative association remains unclear. We aimed to investigate the risks of different types of stroke in patients with migraine.

designA longitudinal follow-up study.

settingData collected from a national cohort between 2002 and 2013 by the South Korea Health Insurance Review and Assessment.

participantsWe extracted the data from patients with migraine (n=41 585) and 1:4 matched controls (n=1 66 340) and analysed the occurrence of ischaemic and haemorrhagic strokes. The migraine group included participants treated for migraine (International Classification of Disease-10 (ICD-10): G43)≥2 times. Haemorrhagic stroke (I60-I62) and ischaemic stroke (I63) were determined based on the admission histories. The crude and adjusted HRs were calculated using Cox proportional hazard models, and the 95% CI were determined. Subgroup analyses stratified by age and sex were also performed.

resultsHigher rates of ischaemic stroke were observed in the migraine group (2.3% [964/41,585]) than in the control group (2.0% [3294/166 340], P<0.001). The adjusted HR for ischaemic stroke was 1.18 (95% CI=1.10 to 1.26) in the migraine group (P<0.001). Compared with control subjects, participants who reported migraine with aura and migraine without aura had increased adjusted HRs of 1.44 (95% CI=1.09 to 1.89) and 1.15 (95% CI=1.06 to 1.24), respectively, for ischaemic stroke, but no increased risk of haemorrhagic stroke. In our subgroup analysis, a strong association between migraine and ischaemic stroke was observed in young patients, specifically young women. The contribution of migraine to the occurrence of ischaemic stroke was also observed in middle-aged women and old women (each P<0.05). The risk of haemorrhagic stroke did not reach statistical significance in any age group.

conclusionMigraine is associated with an increased risk of ischaemic stroke, but not haemorrhagic stroke.

Indexed as

AdultAgedAged, 80 and overAge DistributionBrain IschemiaCohort StudiesFemaleHumansIntracranial HemorrhagesMaleMiddle AgedMigraine DisordersMigraine with AuraProportional Hazards ModelsRepublic of KoreaRisk Factorscohort studyKoreamigrainestroke

Identifiers

PMID30944141
PMCPMC6500292
OpenAlexW2928127421

What OpenQuestion holds

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LicenceCC BY-NC
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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.