Evidence map›Paper›PMID 31784443›Full record

ArticleBMJ open2019

Is neighbourhood walkability related to body mass index among different age groups? A cross-sectional study of Canadian urban areas.

Justin Thielman, Ray Copes, Laura C Rosella, Maria Chiu, Heather Manson

Abstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–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

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

7 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Measuring the Built Environment in Studies of Child Health-A Meta-Narrative Review of Associations.International journal of environmental research and public health · 2021
    Review
  6. Article
  7. Article
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.

Justin ThielmanHealth Promotion, Chronic Disease and Injury Prevention, Public Health Ontario, Toronto, Ontario, Canada Justin.Thielman@oahpp.ca.ORCID 0000-0002-7276-7396
Ray CopesEnvironmental and Occupational Health, Public Health Ontario, Toronto, Ontario, Canada.
Laura C RosellaDalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.ORCID 0000-0003-4867-869X
Maria ChiuInstitute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.
Heather MansonHealth Promotion, Chronic Disease and Injury Prevention, Public Health Ontario, Toronto, Ontario, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies of neighbourhood walkability and body mass index (BMI) have shown mixed results, possibly due to biases from self-reported outcomes or differential effects across age groups. Our objective was to examine relationships between walkability and objectively measured BMI in various age groups, in a nationally representative population.

methodsThe study population came from the 2007-2011 Canadian Health Measures Survey, a cross-sectional survey of a nationally representative Canadian population. In our covariate-adjusted analyses, we included survey respondents aged 6-79 who were not pregnant, did not live in rural areas, were not missing data and were not thin/underweight. We used objectively measured height and weight to calculate BMI among adults aged 18-79 and zBMI among children aged 6-17. We categorised respondents into walkability quintiles based on their residential Street Smart Walk Score values. We performed linear regression to estimate differences between walkability quintiles in BMI and zBMI. We analysed adults and children overall; age subgroups 6-11, 12-17, 18-29, 30-44, 45-64 and 65-79; and sex subgroups.

resultsThe covariate-adjusted models included 9265 respondents overall. After adjustment, differences between walkability quintiles in BMI and zBMI were small and not statistically significant, except for males aged 6-17 in the second-highest walkability quintile who had significantly lower zBMIs than those in the lowest quintile.

conclusionAfter accounting for confounding factors, we did not find evidence of a relationship between walkability and BMI in children or adults overall, or in any age subgroup with sexes combined. However, post hoc analysis by sex suggested males aged 6-17 in more walkable areas may have lower zBMIs.

Indexed as

Body Mass IndexEnvironment DesignResidence CharacteristicsUrban PopulationAdolescentAdultAgedCanadaChildCross-Sectional StudiesFemaleHealth SurveysHumansMaleMiddle AgedSex Factorsepidemiologypreventive medicinepublic health

Identifiers

PMID31784443
PMCPMC6924813

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.