Evidence map›Paper›PMID 33208331›Full record

ArticleBMJ open2020

Caesarean section and the association with migraine: a retrospective register-linked HUNT population cohort study.

Espen Saxhaug Kristoffersen, Sigrid Børte, Knut Hagen, John-Anker Zwart, Bendik Slagsvold Winsvold

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact, top 82% 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

0 citing papers in PubMed, 1 citations in OpenAlex.

No citing paper in PubMed yet.

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.

Espen Saxhaug KristoffersenDepartment of General Practice, Institute of Health and Society, University of Oslo, Oslo, Norway e.s.kristoffersen@medisin.uio.no.ORCID 0000-0002-8999-5424
Sigrid BørteResearch and Communication Unit for Musculoskeletal Health, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway.
Knut HagenDepartment of Neuromedicine and Movement science, Norwegian University of Science and Technology, Trondheim, Norway.
John-Anker ZwartResearch and Communication Unit for Musculoskeletal Health, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway.
Bendik Slagsvold WinsvoldResearch and Communication Unit for Musculoskeletal Health, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway.
Oslo University Hospital · NONorwegian University of Science and Technology · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the association between caesarean section and migraine in a population-based register-linked cohort study.

settingData from the population-based Nord-Trøndelag Health Studies (HUNT2 and HUNT3) were linked to information from the Norwegian Medical Birth Registry.

participants65 343 participants responded to the headache questions in any of the two HUNT studies. Only those answering the headache questions in HUNT2 or 3 and had information about mode of delivery in the Norwegian Medical Birth Registry (born after 1967) were included. Our final sample consisted of 6592 women and 4602 men, aged 19-41 years. OUTCOMES: ORs for migraine given caesarean section. Analyses were performed in multivariate logistic regression models.

resultsAfter adjusting for sex, age and fetal growth restriction, delivery by caesarean section was not associated with migraine later in life (OR 0.86, 95% CI 0.64 to 1.15). Delivery by caesarean section was associated with a reduced OR of non-migrainous headache (OR 0.77, 95% CI 0.60 to 0.99).

conclusionNo association was found between caesarean section and migraine in this population-based register-linked study.

Indexed as

Cesarean SectionMigraine DisordersAdultCohort StudiesFemaleHumansMaleNorwayPregnancyRetrospective StudiesYoung Adultepidemiologygeneral medicine (see internal medicine)migraine

Identifiers

PMID33208331
PMCPMC7677333
OpenAlexW3104339128

What OpenQuestion holds

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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.