Evidence map›Paper›PMID 34400482›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2021

Effects of air pollution and habitual exercise on the risk of death: a longitudinal cohort study.

Cui Guo, Tsung Yu, Ly-Yun Chang, Changqing Lin, Hsiao Ting Yang, Yacong Bo, Yiqian Zeng, Tony Tam, Alexis K H Lau, Xiang Qian Lao

Abstract read
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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

  1. Does ambient PMBMC medicine · 2025
    Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Joint exposure to PMFrontiers in public health · 2025
    Article
  9. Article
  10. Article
  11. Addressing the syndemics of physical inactivity and air pollution.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2021
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Cui GuoJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Tsung YuJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Ly-Yun ChangJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Changqing LinJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Hsiao Ting YangJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Yacong BoJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Yiqian ZengJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Tony TamJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Alexis K H LauJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China.
Xiang Qian LaoJockey Club School of Public Health and Primary Care (Guo, Yang, Bo, Zeng, Lao), the Chinese University of Hong Kong, Hong Kong SAR, China; Department of Public Health (Yu), National Cheng Kung University, Tainan, Taiwan; Institute of Sociology (Chang), Academia Sinica, Taipei, Taiwan; Division of Environment and Sustainability (Lin, Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Civil and Environmental Engineering (Lau), the Hong Kong University of Science and Technology, Hong Kong SAR, China; Department of Nutrition and Food Hygiene (Bo), School of Public Health, Zhengzhou University, China; Department of Sociology (Tam), the Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute of the Chinese University of Hong Kong (Lao), Shenzhen, China. xqlao@cuhk.edu.hk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExercise may exacerbate the adverse health effects of air pollution by increasing the inhalation of air pollutants. We investigated the combined effects of long-term exposure to fine particle matter (PM

methodsWe recruited 384 130 adults (aged ≥ 18 yr) with 842 394 medical examination records between 2001 and 2016, and followed all participants until May 31, 2019. We obtained vital data from the National Death Registry of Taiwan. We estimated PM

resultsA higher level of habitual exercise was associated with a lower risk of death from natural causes, compared with inactivity (hazard ratio [HR] 0.84, 95% confidence interval [CI] 0.80-0.88 for the moderate exercise group; HR 0.65, 95% CI 0.62-0.68 for the high exercise groups), whereas a higher PM

interpretationIncreased levels of exercise and reduced PM

Indexed as

Air PollutionCohort StudiesEnvironmental ExposureExerciseHumansLongitudinal StudiesSurveys and QuestionnairesTaiwan

Identifiers

PMID34400482
PMCPMC8386491

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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.