Evidence map›Paper›PMID 33310796›Full record

ArticleBMJ open2020

Do the associations of body mass index and waist circumference with back pain change as people age? 32 years of follow-up in a British birth cohort.

Stella Muthuri, Rachel Cooper, Diana Kuh, Rebecca Hardy

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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. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

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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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  5. [The connection between back pain and obesity].Orthopadie (Heidelberg, Germany) · 2025
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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

4 authors.

Stella MuthuriMRC Unit for Lifelong Health and Ageing, UCL, London, UK.
Rachel CooperDepartment of Sport and Exercise Sciences, Musculoskeletal Science and Sports Medicine Research Centre, Manchester Metropolitan University, Manchester, UK.ORCID 0000-0003-3370-5720
Diana KuhMRC Unit for Lifelong Health and Ageing, UCL, London, UK.ORCID 0000-0001-7386-2857
Rebecca HardyCLOSER, Social Research Institute, UCL, London, UK rebecca.hardy@ucl.ac.uk.

Funding

Medical Research Council MC_UU_12019/2Medical Research Council MC_UU_12019/4
6 · The paper itself

Abstract

objectivesTo investigate whether cross-sectional and longitudinal associations of body mass index (BMI) and waist circumference (WC) with back pain change with age and extend into later life.

designBritish birth cohort study.

settingEngland, Scotland and Wales.

participantsUp to 3426 men and women from the MRC National Survey of Health and Development. PRIMARY OUTCOME MEASURES: Back pain (sciatica, lumbago or recurring/severe backache all or most of the time) was self-reported during nurse interviews at ages 36, 43, 53 and 60-64 years and in a postal questionnaire using a body manikin at age 68.

resultsFindings from mixed-effects logistic regression models indicated that higher BMI was consistently associated with increased odds of back pain across adulthood. Sex-adjusted ORs of back pain per 1 SD increase in BMI were: 1.13 (95% CI: 1.01 to 1.26), 1.11 (95% CI: 1.00 to 1.23), 1.17 (95% CI: 1.05 to 1.30), 1.31 (95% CI: 1.15 to 1.48) and 1.08 (95% CI: 0.95 to 1.24) at ages 36, 43, 53, 60-64 and 68-69, respectively. Similar patterns of associations were observed for WC. These associations were maintained when potential confounders, including education, occupational class, height, cigarette smoking status, physical activity and symptoms of anxiety and depression were accounted for. BMI showed stronger associations than WC in models including both measures.

conclusionsThese findings demonstrate that higher BMI is a persistent risk factor for back pain across adulthood. This highlights the potential lifelong consequences on back pain of the rising prevalence of obesity within the population.

Indexed as

Body Mass IndexAdultAgedCohort StudiesCross-Sectional StudiesEnglandFemaleFollow-Up StudiesHumansMaleMiddle AgedRisk FactorsScotlandWaist CircumferenceWalesback painepidemiologypublic health

Identifiers

PMID33310796
PMCPMC7735102

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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.