Evidence map›Paper›PMID 33879138›Full record

ArticleBMC medicine2021

Changes over time in latent patterns of childhood-to-adulthood BMI development in Great Britain: evidence from three cohorts born in 1946, 1958, and 1970.

T Norris, M Hamer, R Hardy, L Li, K K Ong, G B Ploubidis, R Viner, W Johnson

Open access · goldAbstract read
In one paragraph

Article in BMC medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

10 citing papers in PubMed, 16 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

8 authors at 5 institutions in 1 country.

T NorrisSchool of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK. t.norris@lboro.ac.uk.
M HamerUCL Institute Sport Exercise Health , Division Surgery Interventional Science, London, UK.
R HardyUCL Institute of Education, London, UK.
L LiUCL Great Ormond Street Institute of Child Health, London, UK.
K K OngMRC Epidemiology Unit, University of Cambridge, Cambridge, UK.
G B PloubidisCentre for Longitudinal Studies, Department of Social Science, University College London, London, UK.
R VinerUCL Great Ormond Street Institute of Child Health, London, UK.
W JohnsonSchool of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK.
University College London · GBLoughborough University · GBEnglish Institute of Sport · GBGreat Ormond Street Hospital · GBUniversity of Cambridge · GB

Funding

Medical Research Council MC_UU_00006/2Medical Research Council MC_UU_00019/1Medical Research Council MC_UU_00019/4Medical Research Council MR/P023347/1Medical Research Council MR/P023444/1
6 · The paper itself

Abstract

backgroundMost studies on secular trends in body mass index (BMI) are cross-sectional and the few longitudinal studies have typically only investigated changes over time in mean BMI trajectories. We aimed to describe how the evolution of the obesity epidemic in Great Britain reflects shifts in the proportion of the population demonstrating different latent patterns of childhood-to-adulthood BMI development.

methodsWe used pooled serial BMI data from 25,655 participants in three British cohorts: the 1946 National Survey of Health and Development (NSHD), 1958 National Child Development Study (NCDS), and 1970 British Cohort Study (BCS). Sex-specific growth mixture models captured latent patterns of BMI development between 11 and 42 years. The classes were characterised in terms of their birth cohort composition.

resultsThe best models had four classes, broadly similar for both sexes. The 'lowest' class (57% of males; 47% of females) represents the normal weight sub-population, the 'middle' class (16%; 15%) represents the sub-population who likely develop overweight in early/mid-adulthood, and the 'highest' class (6%; 9%) represents those who likely develop obesity in early/mid-adulthood. The remaining class (21%; 29%) reflects a sub-population with rapidly 'increasing' BMI between 11 and 42 years. Both sexes in the 1958 NCDS had greater odds of being in the 'highest' class compared to their peers in the 1946 NSHD but did not have greater odds of being in the 'increasing' class. Conversely, males and females in the 1970 BCS had 2.78 (2.15, 3.60) and 1.87 (1.53, 2.28), respectively, times higher odds of being in the 'increasing' class.

conclusionsOur results suggest that the obesity epidemic in Great Britain reflects not only an upward shift in BMI trajectories but also a more recent increase in the number of individuals demonstrating more rapid weight gain, from normal weight to overweight, across the second, third, and fourth decades of life.

Indexed as

Child DevelopmentAdultAgedBody Mass IndexChildCohort StudiesCross-Sectional StudiesFemaleHumansLongitudinal StudiesMaleRisk FactorsUnited KingdomBody mass indexCohortObesityRapidSecularTrajectory

Identifiers

PMID33879138
PMCPMC8059270
OpenAlexW3154065986

What OpenQuestion holds

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LicenceCC BY
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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.