Evidence map›Paper›PMID 21979003›Full record

ArticleAnnals of the rheumatic diseases2012

Life course body mass index and risk of knee osteoarthritis at the age of 53 years: evidence from the 1946 British birth cohort study.

Andrew K Wills, Stephanie Black, Rachel Cooper, Russell J Coppack, Rebecca Hardy, Kathryn Remmes Martin, Cyrus Cooper, Diana Kuh

Open access · bronzeAbstract read
In one paragraph

Article in Annals of the rheumatic diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 6 pooled it
4.7field-weighted citation impact, top 5% 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

61 citing papers in PubMed, 6 syntheses or guidelines pooled it, 122 citations in OpenAlex.

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  5. The effect of obesity on revision rate in unicompartmental knee arthroplasty: a systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
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  19. Elevated BMI increases concurrent pathology and operative time in adolescent ACL reconstruction.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
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1 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 2 countries.

Andrew K WillsMRC Unit for Lifelong Health and Ageing, University College London, 33 Bedford Place, London WC1B 5JU, UK. a.wills@nshd.mrc.ac.uk
Stephanie Black
Rachel Cooper
Russell J Coppack
Rebecca Hardy
Kathryn Remmes Martin
Cyrus Cooper
Diana Kuh
University College London · GBUCL Australia · AUMRC Lifecourse Epidemiology Unit · GBMRC Unit for Lifelong Health and Ageing · GB

Funding

Intramural NIH HHSMedical Research Council MC_U123092721Medical Research Council MC_U123092724Medical Research Council MC_UP_A620_1014
6 · The paper itself

Abstract

introductionThe authors examined how body mass index (BMI) across life is linked to the risk of midlife knee osteoarthritis (OA), testing whether prolonged exposure to high BMI or high BMI at a particular period has the greatest influence on the risk of knee OA.

methodsA population-based British birth cohort of 3035 men and women underwent clinical examination for knee OA at age 53 years.Heights and weights were measured 10 times from 2 to 53 years. Analyses were stratified by gender and adjusted for occupation and activity levels.

resultsThe prevalence of knee OA was higher in women than in men (12.9% (n=194) vs 7.4% (n=108)). In men, the association between BMI and later knee OA was evident at 20 years (p=0.038) and remained until 53 years (OR per z-score 1.38 (95% CI 1.11 to 1.71)). In women, there was evidence for an association at 15 years (p=0.003); at 53 years, the OR was 1.89 (95% CI 1.59 to 2.24) per z-score increase in BMI. Changes in BMI from childhood in women and from adolescence in men were also positively associated with knee OA. A structured modelling approach to disentange the way in which BMI is linked to knee OA suggested that prolonged exposure to high BMI throughout adulthood carried the highest risk and that there was no additional risk conferred from adolescence once adult BMI had been accounted for.

conclusionThis study suggests that the risk of knee OA accumulates from exposure to a high BMI through adulthood.

Indexed as

Body Mass IndexLife Change EventsCohort StudiesComorbidityFemaleHumansMaleMiddle AgedObesityOsteoarthritis, KneeSex FactorsUnited Kingdom

Identifiers

PMID21979003
PMCPMC3329229
OpenAlexW2064180377

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.