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Current wheeze, asthma, respiratory infections, and rhinitis among adults in relation to inspection data and indoor measurements in single-family houses in Sweden - The BETSI study
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Occupational and Environmental Medicine. Univ Hosp, Uppsala, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Occupational and Environmental Medicine. Univ Hosp, Uppsala, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Occupational and Environmental Medicine. Univ Hosp, Uppsala, Sweden..
KTH Royal Inst Technol, Div Bldg Serv & Energy Syst, Sch Architecture & Built Environm, Stockholm, Sweden..
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2017 (English)In: Indoor Air, ISSN 0905-6947, E-ISSN 1600-0668, Vol. 27, no 4, p. 725-736Article in journal (Refereed) Published
Abstract [en]

In the Swedish Building Energy, Technical Status and Indoor environment study, a total of 1160 adults from 605 single-family houses answered a questionnaire on respiratory health. Building inspectors investigated the homes and measured temperature, air humidity, air exchange rate, and wood moisture content (in attic and crawl space). Moisture load was calculated as the difference between indoor and outdoor absolute humidity. Totally, 7.3% were smokers, 8.7% had doctor' diagnosed asthma, 11.2% current wheeze, and 9.5% current asthma symptoms. Totally, 50.3% had respiratory infections and 26.0% rhinitis. The mean air exchange rate was 0.36/h, and the mean moisture load 1.70g/m(3). Damp foundation (OR=1.79, 95% CI 1.16-2.78) was positively associated while floor constructions with crawl space (OR=0.49, 95% CI 0.29-0.84) was negatively associated with wheeze. Concrete slabs with overlying insulation (OR=2.21, 95% CI 1.24-3.92) and brick facade (OR=1.71, 95% CI 1.07-2.73) were associated with rhinitis. Moisture load was associated with respiratory infections (OR=1.21 per 1g/m(3), 95% CI 1.04-1.40) and rhinitis (OR=1.36 per 1g/m(3), 95% CI 1.02-1.83). Air exchange rate was associated with current asthma symptoms (OR=0.85 per 0.1/h, 95% CI 0.73-0.99). Living in homes with damp foundation, concrete slabs with overlying insulation, brick facade, low ventilation flow, and high moisture load are risk factors for asthma, rhinitis, and respiratory infections.

Place, publisher, year, edition, pages
WILEY , 2017. Vol. 27, no 4, p. 725-736
Keywords [en]
asthma, building dampness, indoor environment, mold, rhinitis, ventilation flow
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-328991DOI: 10.1111/ina.12363ISI: 000403895400003PubMedID: 28005296OAI: oai:DiVA.org:uu-328991DiVA, id: diva2:1139571
Funder
National Board of Housing, Building and Planning, 2012-1104Available from: 2017-09-08 Created: 2017-09-08 Last updated: 2018-04-06Bibliographically approved
In thesis
1. Asthma and Rhinitis among Adults in Sweden and China: Risk Factors in the Home Environment
Open this publication in new window or tab >>Asthma and Rhinitis among Adults in Sweden and China: Risk Factors in the Home Environment
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The main aim of this thesis was to evaluate associations between selected home environment factors and asthma, rhinitis and respiratory symptoms among adults from Sweden, China and northern Europe. Two studies were performed in Sweden, one in China, and one longitudinal cohort study was performed in northern Europe. Dampness/mould was common, and was a main risk factor in all studies. Other risk factors for asthma symptoms in Sweden included window pane condensation in winter, multi-family buildings constructed from 1961-1975, rented apartments, environment tobacco smoke (ETS), and living in a colder climate zone. Higher ventilation flow in Sweden was associated with less asthma symptoms. Risk factors for rhinitis in Sweden included window pane condensation, a higher moisture load, concrete slab foundation constructed before 1991, multi-family buildings constructed from 1976-1985, rented apartments and living in densely populated areas. Risk factors for rhinitis in China included window pane condensation, recent redecoration, new furniture, presence of cockroaches, pet keeping, ETS and living near a main road or highway. Frequently cleaning of the home and putting beddings to sunshine were protective factors for rhinitis in China. Other risk factors for respiratory infections in Sweden included houses with a brick façade, window pane condensation, a higher moisture load, multi-family buildings constructed from 1976-1985, rented apartments and living in densely populated areas. Furthermore, dampness and mould, and mould odour were risk factors for onset of asthma and rhinitis in northern Europe. In conclusion, indoor dampness and mould can be a risk factor for asthma and rhinitis in Sweden, China and northern Europe. Certain construction years (1961-1985), ETS, recent redecoration, new furniture, living in urban areas and exposure to traffic air pollution can be risk factors for asthma, rhinitis or respiratory infections. A high ventilation flow and daily cleaning at home can be protective.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2018. p. 80
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1467
Keywords
Rhinitis, Asthma, Home, Dampness, Mould, Ventilation
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Occupational and Environmental Medicine
Identifiers
urn:nbn:se:uu:diva-347698 (URN)978-91-513-0347-5 (ISBN)
Public defence
2018-06-12, Konferensrummet, Arbets- och miljömedicin, Daghammarskjölds väg 60, Uppsala, 09:00 (English)
Opponent
Supervisors
Available from: 2018-05-21 Created: 2018-04-06 Last updated: 2018-05-21

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Wang, JuanEngvall, KarinSmedje, GretaNorbäck, Dan

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