Physicochemical risk factors for building-related symptoms in air-conditioned office buildings: Ambient particles and combined exposure to indoor air pollutants

The Science of the Total Environment
K AzumaH Osawa

Abstract

We conducted a cross-sectional epidemiological study to examine the correlation between indoor air quality (IAQ) and building-related symptoms (BRSs) of office workers in air-conditioned office buildings. We investigated 11 offices during winter and 13 offices during summer in 17 buildings with air-conditioning systems in Tokyo, Osaka, and Fukuoka, and we included 107 office workers during winter and 207 office workers during summer. We conducted environmental sampling for evaluating IAQ and concurrently administered self-reported questionnaires to collect information regarding work-related symptoms. Multivariate analyses revealed that upper respiratory symptoms showed a significant correlation with increased indoor temperature [odds ratio (OR), 1.55; 95% confidence interval (CI), 1.11-2.18] and increased indoor concentration of suspended particles released from the ambient air pollution via air-conditioning systems (OR, 1.31; 95% CI, 1.08-1.59) during winter. In particular, smaller particles (particle size>0.3μm), which possibly penetrated through the filter media in air-conditioning systems from ambient air, were correlated with upper respiratory symptoms. The use of high-efficiency particulate air filters in air-conditioning...Continue Reading

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Citations

Oct 20, 2020·Environmental Science and Pollution Research International·Bhavya BhargavaSanjay Kumar
Jul 1, 2020·Reviews on Environmental Health·Guoqing ZhaoFeipeng Jiao
Dec 22, 2020·Indoor Air·Guillaume SérafinCorinne Mandin
Feb 11, 2021·International Journal of Environmental Research and Public Health·Kyle L Alford, Naresh Kumar
Feb 19, 2021·International Journal of Hygiene and Environmental Health·Peder WolkoffPaolo Carrer
Apr 26, 2021·Journal of Environmental Management·Fengju LuMeng Si
Mar 15, 2020·Ecotoxicology and Environmental Safety·Murnira OthmanYutaka Matsumi

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