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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Munksgaard International Publishers
    Indoor air 5 (1995), S. 0 
    ISSN: 1600-0668
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Medicine
    Notes: This case referent study is a part of the Office Illness Project in Northern Sweden. From a questionnaire study among 5 986 office workers, 75 VDT workers with self-reported facial skin symptoms and the same number of referents were selected for this study. The environmental electric and magnetic fields in the office as well as electromagnetic fields associated with the VDT at the workplace were measured. The aim of this pan of the project was to explore the role of the measured electromagnetic parameters in relation to skin symptoms. For most of the measured parameters there was no difference between cases and referents. However, more cases than referents were found in the highest exposure group for two of the measured parameters. For the background electric field in the room the relative risk in terms of crude odds ratio (OR) was 3.0 (95% CI: 1.2–7.2) for the high exposed group (≥31 V/m) compared with the lowest group (≤10 V/m). The same comparison for the magnetic field in the ELF-range (≥0.30 μT vs ≤0.145 μT) in front of the VDT gave an OR of 2.7 (95% CI: 1.0–6.9).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1600-0668
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Medicine
    Notes: In two case-referent studies the associations between questionnaire symptom reports, expressed as SBS (Sick Building Syndrome) in office workers or facial skin symptoms among VDT-workers, and physical data from offices in 160 buildings were investigated. The results show that low outdoor airflow rate and presence of certain pollution sources, such as copying machines, tended to be associated with an elevated prevalence of SBS. Buildings built or remodeled between 1977 and 1986, low-rise buildings with a horizontal roof and a foundation of the type “concrete slab on the ground”, as well as rooms with flourescent tube lighting with metal shields were also associated with higher SBS risks. A number of factors were associated with an overrepresentation of skin symptoms among VDT-workers such as type of foundation (concrete slab on the ground and crawlspace), the frequency of floor cleaning and type of lighting (fluorescent tubes with glass/plastic shields). It has not been possible to establish conclusive explanations for these associations. The difference in associations between building factors and S B S, and between building factors and skin symptoms among VD Tworkers points to different etiologies.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1600-0668
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Medicine
    Notes: The prevalence of symptoms compatible with the Sick Building Syndrome (SBS) was measured in a questionnaire study among 4 943 office workers. An assessment of the relation between SBS symptoms and personal, physical and psychosocial exposure factors was made. In contrast to males, the majority of females were lower-grade staff Females reported annoyance from physical climate factors more often, both at work and at home. Males reported a better psychosocial situation than females. Female gender, asthmalrhinitis, paper and VDT work were related to an increased prevalence of SBS symptoms. The prevalence of facial skin symptoms increased markedly with the amount of VDT work. Psychosocial workload intensifid this relation. Inequalities in physical climate and psychosocial conditions associated with different positions held in the offices can be of importance for the increased occurrence of symptoms among females.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Munksgaard International Publishers
    ISSN: 1600-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective: To assess whether socioeconomic factors are associated with the progression of caries, independently of a previous history of caries. Subjects and methods: In 1995, as part of a longitudinal study of preventive measures, 3373 Swedish 12-year-olds were examined for caries and answered a questionnaire regarding socioeconomic level (SEL), ethnicity and residential area. The examination was repeated in 1997 when 3109 of the teenagers participated. Baseline caries and increments in the incidence of caries were computed. The influence of structural variables on baseline caries as well as a 2-year increment were analysed by means of Poisson regression. Results: The risk of having caries as 12-year-olds was greater in workers' and immigrants' children, as well as in urban teenagers. The risk of developing new caries was most influenced by an earlier experience of caries. The social gradient was, however, still visible when a previous experience of caries was accounted for. The pattern found in the cross-sectional data from 1995, with more caries in children from workers' families, therefore prevailed in the increment data. Conclusion: Irrespective of earlier caries status there is a social gradient in caries progression. It therefore seems that the preventive methods do not function to the equal benefit of all children.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1246
    Keywords: Welding ; Occupational diseases ; Epidemiology ; Glomerulonephritis ; Interstitial nephritis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary It was observed that some patients with glomerulonephritis or interstitial nephritis were welders. A hypothesis that welding fumes were an occupational hazard was put forward and initiated the following case-referent study. 143 cases were defined as living males, age 25 to 65 years, with renal disease which caused renal biopsy from 1976–1982. Three population-based referents for each case were selected from the national register of the total population matched by sex, age and community. Exposure was assessd by means of a questionnaire. Only 7% of the cases and 12% of the referents did not answer the questionnaire. There were no differences in exposure rates between cases and referents, even if exposure restrictions were applied. The power of the case-referent study was high.
    Type of Medium: Electronic Resource
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