Evidence map›Paper›PMID 30154218›Full record

ArticleCMAJ open

Canadian federal penitentiaries as obesogenic environments: a retrospective cohort study.

Claire Johnson, Jean-Philippe Chaput, Maikol Diasparra, Catherine Richard, Lise Dubois

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

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

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

  1. Prevalence of overweight and obesity in incarcerated individuals in developed and developing countries: A systematic review and meta-analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
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  7. Weight Gain and Mental Health in the Canadian Prison Population.Journal of correctional health care : the official journal of the National Commission on Correctional Health Care · 2021
    Article
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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.

Claire JohnsonInterdisciplinary School of Health (Johnson), University of Ottawa; Healthy Active Living and Obesity Research Group (Chaput); Children's Hospital of Eastern Ontario Research Institute; School of Epidemiology and Public Health (Diasparra, Richard, Dubois), University of Ottawa, Ottawa, Ont. cjohn127@uottawa.ca.
Jean-Philippe ChaputInterdisciplinary School of Health (Johnson), University of Ottawa; Healthy Active Living and Obesity Research Group (Chaput); Children's Hospital of Eastern Ontario Research Institute; School of Epidemiology and Public Health (Diasparra, Richard, Dubois), University of Ottawa, Ottawa, Ont.
Maikol DiasparraInterdisciplinary School of Health (Johnson), University of Ottawa; Healthy Active Living and Obesity Research Group (Chaput); Children's Hospital of Eastern Ontario Research Institute; School of Epidemiology and Public Health (Diasparra, Richard, Dubois), University of Ottawa, Ottawa, Ont.
Catherine RichardInterdisciplinary School of Health (Johnson), University of Ottawa; Healthy Active Living and Obesity Research Group (Chaput); Children's Hospital of Eastern Ontario Research Institute; School of Epidemiology and Public Health (Diasparra, Richard, Dubois), University of Ottawa, Ottawa, Ont.
Lise DuboisInterdisciplinary School of Health (Johnson), University of Ottawa; Healthy Active Living and Obesity Research Group (Chaput); Children's Hospital of Eastern Ontario Research Institute; School of Epidemiology and Public Health (Diasparra, Richard, Dubois), University of Ottawa, Ottawa, Ont.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVery little is known about how incarceration influences a person's weight in Canada. We sought to determine how inmates' weights change during their incarceration in Canadian federal penitentiaries.

methodsWe performed a retrospective, longitudinal cohort study to examine weight change in Canadian federal penitentiaries. To participate, inmates had to have been incarcerated for at least 6 months at the time of the study. Current anthropometric data were measured or taken from medical records, then compared with anthropometric data from the beginning of incarceration (mean follow-up of 5.0 ± 8.3 yr). We examined 3 outcomes: change in weight (kg), change in body mass index (BMI) and rate of weight change (kg/yr) during incarceration.

resultsA total of 1420 inmates participated in this study. Almost three-quarters (73.0%,

interpretationThe Canadian correctional environment can be considered obesogenic, with most inmates experiencing undesirable and rapid weight gain during their incarceration. Rates of obesity increased dramatically during incarceration, and could put inmates at increased risk of obesity-related health problems.

Identifiers

PMID30154218
PMCPMC6182125

What OpenQuestion holds

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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.