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Frailty Risk in Older Adults Associated With Long-Term Exposure to Ambient PM2.5 in 6 Middle-Income Countries
Shanghai Municipal Centre for Disease Control and Prevention, Shanghai, China; School of Public Health and Community Medicine, Institution of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Umeå University, Faculty of Medicine, Department of Epidemiology and Global Health. School of Public Health and Community Medicine, Institution of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.ORCID iD: 0000-0003-0556-1483
International Health Transitions, ACT, Canberra, Australia; University of Newcastle, School of Medicine and Public Health, NSW, Newcastle, Australia.
Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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2022 (English)In: The journals of gerontology. Series A, Biological sciences and medical sciences, ISSN 1079-5006, E-ISSN 1758-535X, Vol. 77, no 5, p. 970-976Article in journal (Refereed) Published
Abstract [en]

Background: A series of studies have explored the health effects of long-term exposure to ambient PM2.5 among older adults. However, few studies have investigated the adverse effect of long-term exposure to ambient PM2.5 on frailty, and the results are inconclusive. This study sought to investigate the associations between long-term exposure to ambient PM2.5 and frailty in 6 low- and middle-income countries.

Methods: We included an analytical sample of 34 138 individuals aged 50 and older from the Study on global AGEing and adult health Wave 1 (2007/2010). Air pollution estimates were generated using a standard methodology derived from Moderate Resolution Imaging Spectroradiometer observations and Multiangle Imaging Spectroradiometer instruments from the Terra satellite, along with simulations from the GEOS-Chem chemical transport model. A 3-level hierarchical logistic model was used to evaluate the association between frailty index and long-term PM2.5 exposure at 3 levels (individual, province, and country).

Results: In rural areas, each 10 μg/m3 increase in ambient PM2.5 was associated with a 30% increase in the odds of frailty (OR = 1.30, 95% CI: 1.21-1.39) after adjusting for various potential confounding factors. The gender-stratified analysis showed that the association seemed to be slightly stronger in men (OR = 1.31, 95% CI: 1.18-1.46) than in women (OR = 1.21, 95% CI: 1.07-1.36) in rural areas.

Conclusion: In a large sample of community-based older adults from 6 middle-income countries, we found evidence that long-term PM2.5 exposure was associated with frailty in rural areas.

Place, publisher, year, edition, pages
The Gerontological Society of America , 2022. Vol. 77, no 5, p. 970-976
Keywords [en]
Air pollution, Ambient PM2.5, Frailty, Older adults
National Category
Occupational Health and Environmental Health Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:umu:diva-196140DOI: 10.1093/gerona/glac022ISI: 000767449400001PubMedID: 35134914Scopus ID: 2-s2.0-85129997764OAI: oai:DiVA.org:umu-196140DiVA, id: diva2:1666752
Available from: 2022-06-09 Created: 2022-06-09 Last updated: 2022-06-09Bibliographically approved

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