Self-reported traffic-related air pollution and respiratory symptoms among adults in an area with modest levels of traffic

Autoři: Marit Nøst Hegseth aff001;  Bente Margaret Oftedal aff003;  Anje Christina Höper aff001;  Anna Louise Aminoff aff001;  Marte Renate Thomassen aff001;  Martin Veel Svendsen aff004;  Anne Kristin Møller Fell aff004
Působiště autorů: Department of Occupational and Environmental Medicine, University Hospital of North Norway, Tromsø, Norway aff001;  Institute of Community Medicine, UiT- The Arctic University of Norway, Tromsø, Norway aff002;  Department of Air Pollution and Noise, Norwegian Institute of Public Health, Oslo, Norway aff003;  Department of Occupational and Environmental Medicine, Telemark Hospital, Skien, Norway aff004
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0226221


Health effects of traffic-related air pollution (TRAP) concentrations in densely populated areas are previously described. However, there is still a lack of knowledge of the health effects of moderate TRAP levels. The aim of the current study, a population-based survey including 16 099 adults (response rate 33%), was to assess the relationship between TRAP estimates and respiratory symptoms in an area with modest levels of traffic; Telemark County, Norway. Respondents reported respiratory symptoms the past 12 months and two TRAP exposure estimates: amount of traffic outside their bedroom window and time spent by foot daily along a moderate to heavy traffic road. Females reported on average more symptoms than males. Significant relationships between traffic outside their bedroom window and number of symptoms were only found among females, with the strongest associations among female occasional smokers (incidence rate ratio [IRR], 1.75, 95% confidence interval (CI) [1.16–2.62] for moderate or heavy traffic compared to no traffic). Significant relationship between time spent daily by foot along a moderate to heavy traffic road and number of symptoms was found among male daily smokers (IRR 1.09, 95% CI [1.04–1.15] per hour increase). Associations between traffic outside bedroom window and each respiratory symptom were found. Significant associations were primarily detected among females, both among smokers and non-smokers. Significant associations between time spent by foot daily along a moderate to heavy traffic road (per hour) and nocturnal dyspnoea (odds ratio (OR) 1.20, 95% CI [1.05–1.38]), nocturnal chest tightness (OR 1.13 [1.00–1.28]) and wheezing (OR 1.14 [1.02–1.29]) were found among daily smokers, primarily men. Overall, we found significant associations between self-reported TRAP exposures and respiratory symptoms. Differences between genders and smoking status were identified. The findings indicate an association between TRAP and respiratory symptoms even in populations exposed to modest levels of TRAP.

Klíčová slova:

Air pollution – Asthma – Coughing – Dyspnea – Norway – Roads – Smoking habits – Urban areas


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