Evidence map›Paper›PMID 35210341›Full record

ArticleBMJ open2022

Does the risk of chronic low back pain depend on age at menarche or menopause? A population-based cross-sectional and cohort study: the Trøndelag Health Study.

Ingrid Heuch, Ivar Heuch, Knut Hagen, Kjersti Storheim, John-Anker Zwart

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

11 citing papers in PubMed, 12 citations in OpenAlex.

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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 2 institutions in 1 country.

Ingrid HeuchDepartment of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway ingrid.heuch@ous-hf.no.ORCID 0000-0003-1202-730X
Ivar HeuchDepartment of Mathematics, University of Bergen, Bergen, Norway.ORCID 0000-0003-3386-9688
Knut HagenDepartment of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway.
Kjersti StorheimResearch and Communication Unit for Musculoskeletal Health (FORMI), Oslo University Hospital, Oslo, Norway.
John-Anker ZwartDepartment of Research, Innovation and Education, 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

objectiveIn most population-based studies of low back pain (LBP), women have a higher risk than men, possibly reflecting hormonal influences. The aim of this study was to explore associations between age at menarche and menopause and risk of chronic LBP.

designPopulation-based cross-sectional and cohort study designs.

settingThe HUNT2 and HUNT3 medical surveys of the entire population of Nord-Trøndelag County in Norway.

main outcome measurePrevalence or risk of chronic LBP, defined as LBP persisting at least 3 months continuously during last year.

participantsAssociations between age at menarche and prevalence of chronic LBP were examined in cross-sectional data from HUNT2, comprising 27 697 women aged 20-69 years, with 7300 women reporting LBP. The corresponding cohort data included 11 659 women without LBP at baseline in HUNT2, with 2353 women reporting LBP at follow-up 11 years later in HUNT3. Cross-sectional data on age at menopause or premenopausal status included 11 332 women aged 40-69 years, with 3439 women reporting chronic LBP. Corresponding cohort data included 7893 women without LBP at baseline, of whom 1100 developed LBP.

methodsAssociations between age at menarche or menopause and risk of chronic LBP were examined by generalised linear modelling.

resultsA U-shaped association was indicated between age at menarche and risk of chronic LBP, both in the cross-sectional and cohort studies. Age at menarche ≤11 years was associated with an increased risk of chronic LBP, with a relative risk of 1.32 (95% CI 1.15 to 1.52), compared with age 14 years at menarche, after relevant adjustments. Corresponding cross-sectional crude absolute risks were 32% and 25%, respectively. No association was established between age at menopause and risk of LBP. Being premenopausal had no influence on risk.

conclusionsIn contrast to results for age at menopause, the association with age at menarche suggests that hormonal factors affect the risk of LBP.

Indexed as

Low Back PainCohort StudiesCross-Sectional StudiesFemaleHumansMaleMenarcheMenopauseRisk Factorsepidemiologyneurologypublic health

Identifiers

PMID35210341
PMCPMC8883263
OpenAlexW4213434016

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.