49 e-Letters

published between 2008 and 2011

  • Reply to Kolstad & Bondes regarding “objective” exposure measurements of psychosocial working condit
    K Waldenström

    Reply to Kolstad and Bondes regarding “objective” exposure measurements of psychosocial working conditions

    We agree with Kolstad and Bonde that it is important to identify measures of “psychosocial” working conditions that are less dependent of the individual appraisal than pure self-report. This was the intention of our two studies published in OEM (1-2). The studies were based on an exposure protocol to asses...

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  • Psychosocial work characteristics and depression: The importance of objective exposure measures
    Henrik A Kolstad

    Numerous studies have documented that perception of adverse psychosocial factors at work is related to major depression, but we still do not know if this reflects causal characteristics of the working environment, personal characteristics of the individual worker, trivial associations, common method variance or other types of reporting bias because most studies have relied on self-reported exposure information (1)....

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  • Identifying tumour sites in the IARC Monographs
    VJ Cogliano
    The letter from Drs Huff and Infante1 provides an opportunity to correct some misperceptions that have developed about the IARC Monographs. First, Huff and Infante call on IARC to make “appropriate adjustments” and “properly amend” the summaries for formaldehyde and other Monographs. It is important to understand that IARC does not change summaries, which are developed by independent Working Groups of scientists who conducted th...
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  • Response to Chris J Kalman
    Adeleh Shirangi

    We are writing to respond to Dr.Kalman in regard to our recent article entitled Maternal Occupational Exposure and Risk of Spontaneous Abortion in Veterinary Practice.

    Dr. Kalman believes that he has picked up an anomaly in the presentation of data on radiation. We would like to reassure readers of the journal that there is no anomaly in the presentation of data and all presented results including radiation...

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  • Using proportion mortality ratio to evaluate the risk of cancer
    Hui Zhang

    On the basis of a retrospective mortality study Mastrangelo and his co-workers (Occup Environ Med 2008; 65: 697-700) concluded that “a high and prolonged exposure to cotton dust and other endotoxin-containing organic dusts was related to a lower risk of lung cancer”. The paper looked at the cancer risk, especially on lung cancer, among cotton mill workers by using the Standard Mortality Ratio (SMR). We believe that meth...

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  • Maternal Occupational Exposure and Risk of Spontaneous Abortion in Veterinary Practice
    Chris J Kalman

    Shirangi and her colleagues set out to examine the relationship between occupational exposures and spontaneous abortion in female veterinarians. One exposure examined, is in relation to the use of x- rays, where the authors report in the abstract that veterinarians who reported performing more than 5 radiographic examinations per week had a statistically significant elevated risk of spontaneous abortion compared with th...

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  • Health effects of mobile phone base stations
    Vini G. Khurana

    Dear Editor:

    The timely article by Blettner et al. [1] reports an association, albeit weak, between adverse health effects and a distance of < 500 m from mobile phone base stations. The authors state that this observation cannot be explained by participant attributions or concerns alone and conclude that “the worries and health complaints of people living close to mobile phone base stations need to be taken s...

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  • Estimation of occupational risks from environmental studies?
    Jürgen M Bünger

    Since 1986 cancer events in the Dutch population related to nutrition and lifestyle factors are observed in the prospective cohort study “The Netherlands cohort study on diet and cancer”. Now the data of 58.279 male study participants have been evaluated regarding a potential association between the occupational activity and lung cancer. Present information on 5 performed jobs respectively activities of each study partic...

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  • Carcinogenicity of wood dust
    Heikki Savolainen

    Dear Editor,

    As pointed out by the authors, the ultimate carcinogen in the occupational wood dust exposure is not known. It has been known that hardwood dust particles are much more harmful than those from softwood sources. Tannins are versatile markers for hardwood species (1) and their presence e.g. in the nasal lavage liquid can be used to quantitatively monitor the dust burden at the target site (2).

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  • Reduced Lung Cancer in Agricultural Worlers
    John H. Lange

    The paper by Laakkonen et al., (1) provides an excellent discussion and additional information on exposure outcomes from bacteria and mould. I would like to mention that one possible reason why no association between “reduced” cancer, especially lung cancer, and exposure to bacteria was observed in women is due to the lower amount of time this group may spend “being exposed” (as seen in table 4). However, as noted by th...

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