Traffic exposure associated with allergic asthma and allergic rhinitis in adults. A cross-sectional study in southern Sweden.

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Bibtex

@article{b338eace06df49beb2fd75a80c55b8d7,
title = "Traffic exposure associated with allergic asthma and allergic rhinitis in adults. A cross-sectional study in southern Sweden.",
abstract = "BACKGROUND: There is conflicting evidence that traffic-related air pollution is a risk factor for allergic conditions. Few studies have investigated this in adults. In adults, a high proportion of asthma, rhinitis and eczema is triggered by non-allergic factors. We investigated traffic as a risk factor for allergic versus non-allergic asthma and rhinitis, and eczema, in adults. A questionnaire from 2000 (n = 9319, 18-77 years) provided individual data about disease outcome and self-reported traffic exposure. Additional exposure assessments were obtained using Geographical Informations Systems (GIS). Residential addresses were linked to the national Swedish Road Database and to a pollutant database with modelled annual means of NOx (Nitrogen Oxids). RESULTS: Living within 100 m from a road with a traffic intensity of >10 cars/min (24 hour mean) was associated with prevalence of current asthma reported to be triggered by allergic factors (OR = 1.83, 95{\%} CI = 1.23-2.72) and with allergic rhinitis (OR = 1.30, 95{\%}CI = (1.05-1.61). No relation was seen with asthma or rhinitis triggered by other factors. Living within 100 m of a road with >10 cars/min was also associated with hand-eczema during the last 12 months (OR = 1.63, 95{\%} CI = 1.19-2.23), but not with allergic eczema or diagnosed hand-eczema. Consistent results were seen using self-reported traffic, but the associations with NOx were less consistent. CONCLUSION: Exposure to traffic was associated with a higher prevalence of allergic asthma and allergic rhinitis, but not with asthma or rhinitis triggered by non-allergic factors. This difference was suggested by the overall pattern, but only clear using GIS-measured traffic intensity as a proxy for traffic exposure. An association was also found with hand-eczema during the last 12 months. We suggest that asthma and rhinitis should not be treated as homogenous groups when estimating effects from traffic in adults.",
author = "Anna Lindgren and Emilie Stroh and Ulf Nihl{\'e}n and Peter Montnemery and Anna Axmon and Kristina Jakobsson",
year = "2009",
doi = "10.1186/1476-072X-8-25",
language = "English",
volume = "8",
journal = "International Journal of Health Geographics",
issn = "1476-072X",
publisher = "BioMed Central",
number = "May 6",

}