Ambient air pollution, lung function and COPD: cross-sectional analysis from the WHO Study of AGEing and adult health wave 1

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dc.contributor.authorElbarbary, M.
dc.contributor.authorOganesyan, A.
dc.contributor.authorHonda, T.
dc.contributor.authorKelly, P.
dc.contributor.authorZhang, Y.
dc.contributor.authorGuo, Y.
dc.contributor.authorMorgan, G.
dc.contributor.authorGuo, Y.
dc.contributor.authorNegin, J.
dc.date.issued2020
dc.description.abstractBackground Long-term exposure to ambient air pollution leads to respiratory morbidity and mortality; however, the evidence of the effect on lung function and chronic obstructive pulmonary disease (COPD) in older adult populations is inconsistent. Objective To address this knowledge gap, we investigated the associations between particulate matter (PM), nitrogen dioxide (NO2) exposure and lung function, as well as COPD prevalence, in older Chinese adults. Methods We used data from the WHO Study on global AGEing and adult health (SAGE) China Wave 1, which includes 11, 693 participants from 64 townships in China. A cross-sectional analysis explored the association between satellite-based air pollution exposure estimates (PM with an aerodynamic diameter of ≤10 µm [PM10], ≤2.5 µm [PM2.5] and NO2) and forced expiratory volume in one second (FEV1), forced vital capacity (FVC), the FEV1/FVC ratio and COPD (defined as post-bronchodilator FEV1/FVC <70%). Data on lung function changes were further stratified by COPD status. Results Higher exposure to each pollutant was associated with lower lung function. An IQR (26.1 µg/m3) increase in PM2.5 was associated with lower FEV1 (−71.88 mL, 95% CI –92.13 to –51.64) and FEV1/FVC (−2.81, 95% CI −3.37 to –2.25). For NO2, an IQR increment of 26.8 µg/m3 was associated with decreases in FEV1 (−60.12 mL, 95% CI –84.00 to –36.23) and FVC (−32.33 mL, 95% CI –56.35 to –8.32). A 31.2 µg/m3 IQR increase in PM10 was linked to reduced FEV1 (−8.86 mL, 95% CI −5.40 to 23.11) and FEV1/FVC (−1.85, 95% CI −2.24 to –1.46). These associations were stronger for participants with COPD. Also, COPD prevalence was linked to higher levels of PM2.5 (POR 1.35, 95% CI 1.26 to 1.43), PM10 (POR 1.24, 95% CI 1.18 to 1.29) and NO2 (POR 1.04, 95% CI 0.98 to 1.11). Conclusion Ambient air pollution was associated with lower lung function, especially in individuals with COPD, and increased COPD prevalence in older Chinese adults.
dc.description.statementofresponsibilityMona Elbarbary, Artem Oganesyan, Trenton Honda, Patrick Kelly, Ying Zhang, Yuming Guo ... et al.
dc.identifier.citationBMJ Open Respiratory Research, 2020; 7(1):1-11
dc.identifier.doi10.1136/bmjresp-2020-000684
dc.identifier.issn2052-4439
dc.identifier.issn2052-4439
dc.identifier.orcidZhang, Y. [0000-0001-6214-2440]
dc.identifier.urihttps://hdl.handle.net/2440/132606
dc.language.isoen
dc.publisherBMJ
dc.rights© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. http://creativecommons.org/licenses/by-nc/4.0/ This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.
dc.source.urihttps://doi.org/10.1136/bmjresp-2020-000684
dc.subjectLung
dc.subjectHumans
dc.subjectPulmonary Disease, Chronic Obstructive
dc.subjectAir Pollutants
dc.subjectCross-Sectional Studies
dc.subjectAir Pollution
dc.subjectEnvironmental Exposure
dc.subjectAge Factors
dc.subjectAged
dc.subjectMiddle Aged
dc.subjectWorld Health Organization
dc.titleAmbient air pollution, lung function and COPD: cross-sectional analysis from the WHO Study of AGEing and adult health wave 1
dc.typeJournal article
pubs.publication-statusPublished

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