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Incidence of chronic bronchitis in a cohort of pulp mill workers with repeated gassings to sulphur dioxide and other irritant gases
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin. Department of Occupational and Environmental Medicine, Sundsvall Hospital, Sundsvall, Sweden.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Yrkes- och miljömedicin.
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2013 (engelsk)Inngår i: Environmental health, ISSN 1476-069X, Vol. 12, Article Number: 113- s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: Occupational exposure to irritants is associated with chronic bronchitis. The aim of this study was to elucidate whether repeated peak exposures with respiratory symptoms, gassings, to sulphur dioxide (SO2) and other irritant gases could increase the risk of chronic bronchitis.

METHODS: The study population comprised 3,060 Swedish pulp mill workers (84% males) from a cohort study, who completed a comprehensive questionnaire with items on chronic bronchitis symptoms, smoking habit, occupational history, and specific exposures, including gassings. 2,037 have worked in sulphite mills. Incidence rates and hazard ratios (HRs) for the observation period, 1970-2000, in relation to exposure and the frequency of repeated gassings to SO2 and other irritant gases were calculated.

RESULTS: The incidence rate for chronic bronchitis among workers with repeated gassings was 3.5/1,000 person-years compared with 1.5/1,000 person-years among unexposed workers (HR 2.1, 95% confidence interval (CI) 1.4-3.1). The risk was even higher in the subgroup with frequent gassings (HR 3.2, 95% CI 2.0-5.2), particularly among never-smokers (HR 8.7, 95% CI 3.5-22).

CONCLUSIONS: Repeated gassings to irritant gases increased the incidence of chronic bronchitis in our study population during and after work in pulp mills, supporting the hypothesis that occupational exposures to irritants negatively affect the airways. These results underscore the importance of preventive actions in this work environment.

sted, utgiver, år, opplag, sider
BioMed Central, 2013. Vol. 12, Article Number: 113- s.
Emneord [en]
(MeSH), Bronchitis, Chronic, Irritants, Sulphur dioxide, Paper
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-84977DOI: 10.1186/1476-069X-12-113PubMedID: 24354705OAI: oai:DiVA.org:umu-84977DiVA: diva2:690597
Forskningsfinansiär
Forte, Swedish Research Council for Health, Working Life and Welfare
Tilgjengelig fra: 2014-01-24 Laget: 2014-01-24 Sist oppdatert: 2014-02-24bibliografisk kontrollert

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