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Search: swepub > Umeå University > Stenlund Hans > Other publication

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  • Glas, Bo, 1959-, et al. (author)
  • Association of exposure to ozone, formaldehyde, NO2 and terpenes with reported symptoms in office workers
  • Other publication (other academic/artistic)abstract
    • A number of risk factors for “sick building syndrome” (SBS) are known, including poor ventilation, but the associated substances in the air that are removed by ventilation are unknown. In this study the exposure of office workers to formaldehyde, d-limonene, nitrogen dioxide, ozone and α-pinene at work and at home was measured during a working week. Data on symptoms were obtained by analyzing responses to a questionnaire and participants were divided into cases and controls. We found no significant differences in chemical exposure between cases and controls. However, correlations were found between a number of individual symptoms and exposure to specific substances or combinations of substances.
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  • Glas, Bo, 1959-, et al. (author)
  • The stability of office workers’ unspecific building-related symptom reports
  • Other publication (other academic/artistic)abstract
    • The stability of reported unspecific building-related symptoms, or sick building syndrome (SBS) was investigated in this study. In Umeå and Vasa, two cities in northern Sweden and Finland, 172 subjects were asked about their symptoms in two questionnaires. The first contained questions about symptoms during the past three months, right now (when answering the questionnaire), and if any symptom ameliorated when they were not at their workplaces. Later on, all of the workers took measurements of their personal chemical exposure at work and at home during one week, and at the end of the week they were asked about symptoms during the week. The stability of a case/control concept was investigated as well as individual symptoms. It was found that 67 % of cases and controls did not change class if classifications were based on answers on symptoms during both the past three months and the week of measurements. Corresponding proportions for general, mucosal and skin symptoms were 71 %, 71 % and 78 % respectively. However, measurement activities appeared to increase symptom reports; on average 43 % of controls reported symptoms compatible with the case definition and 53 % of individual symptoms during the week of chemical measurements were not experienced when asked about symptoms during the past three months. Classification of participants with atopic disease and those 41 years old, or younger, were least stable. Nausea/dizziness does not seem to be strongly associated with indoor air quality while other general symptoms, dry eyes and facial skin symptoms are often attributed to staying within the workplace building
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