292 e-Letters

  • The Disappearing Link between Pregnancy and Drinking
    Leah A. Simms

    The findings by Kelley at al. (2010) were found in newspapers and TV shows and presented as evidence that light drinking during pregnancy may not be harmful after all. The study cannot be used as a dependable indication that low amounts of alcohol are beneficial to children, because the amount of alcohol consumed was measured by a self-report of the mother. Self-reported data on alcohol consumption does not produce accu...

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  • low level exposure - high level disfunction
    Barry Stanley

    2288 Rougecrest Drive, Oakville, Ontario. Canada. L6H 6N2 tel. 905 257 7869 e-mail bstanley3@cogeco.ca

    6th. October, 2010.

    Dear Editor.

    The SDQ is only a brief screening tool. It is questionable that its reliability extends to the highly charged questions of alcohol consumption during pregnancy and the effects on the child. The BAS is not comprehensive "were more specific abilities need investi...

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  • Public Health Issues concerning Hearing Problems in the working and non-working Population
    Teddy C. Cheng

    Dear Editor

    I am a Senior Audiologist by profession who qualified with a British Masters degree (University College London, 2004) and an American Doctorate degree (NOVA Southeastern University, 2006), both in Audiology. I have practised Clinical Audiology for more than six years and I work closely with Otolaryngology doctors/surgeons both in clinical procedures and research. At present (2010), I am pursuing a Master...

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  • A cautionary note on the inclusion of strong predictors of the exposure in propensity score analysis
    Rohit P Ojha

    Cousens et al.[1] recently reviewed the utility and limitations of several methods for addressing confounding in non-randomized evaluations of public health interventions. Propensity score analysis was one of the analytic methods discussed in the review. The authors noted several limitations of propensity score analysis including potentially decreased power if multiple predictors of the exposure that lack a causal effec...

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  • Re:Conceptual fallacy
    Annette Erlangsen

    Assumptions beyond the current level of evidence

    We hereby acknowledge the e-letter by Prof. Goran Isacsson (dated 27th October, 2009) to our study on antidepressants and the change of the suicide rate in older adults [1,2]. We indeed appreciate the comment, even as our opinions differ.

    Prof. Isacsson postulates that antidepressants (primarily SSRIs) are accountable - not only for the reduction in sui...

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  • Ethnic differences and HPV Vaccination - an Australian comparison
    Margaret E Heffernan OAM

    Recent findings from a small qualitative study with Australian parents of Aboriginal,Anglo and Chinese backgrounds offered similar findings with key differences and indicate that generalisations cannot be made about ethnic groups globally.The soon to be published data indicates:

    1.Vaccine acceptability - all parents supported HPV vaccination as a cervical cancer preventative but not as a STI preventative.Partia...

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  • Effects of standard adjustment approaches on relative and absolute inequalities
    James Scanlan

    In a 2006 comment [1] on the article by Lynch et al.,[2] I pointed out that the authors’ findings of different contributions of risk factors to relative and absolute inequalities in CHD rates were functions of the fact that the authors studied the effects of the elimination of risk factors rather the effects of adjusting for the implications of differing risk profiles in different education groups. In making this point,...

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  • Conceptual fallacy
    Göran Isacsson

    Erlangsen et al. linked data from an individual-based prescription database in Denmark with data from the cause-of-death register for the two years 1996 and 2000[1]. They found 88 fewer suicides in 2000 than in 1996, 7 fewer among the population that was treated with antidepressants and 81 fewer among the untreated population. Based on “decomposition” analysis of these data, the authors concluded, “Individuals in active tre...

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  • Querying the mathematics of a 74% increase in incidence
    Helen A Kinghorn

    Dear Editor,

    The authors state in their conclusions the incidence of diabetes in the UK between 1997 and 2003 increased from 2.84 to 4.66 per 1000 person- years. I believe these figures represent a 64% increase and not the 74% reported in the article.

  • Cross sectional studies- Odds ratios or prevalence ratios
    Prasanna Samuel

    I read with interest the article by Joshy et al on prevalence of diabetes. The authors aimed at assessing the influence of deprivation on the prevalence of diabetes and have used cross-sectional study design. The authors estimated odds ratios using logistic regression. There are two fundamental interpretative issues in using odds ratio as a measure of association in cross sectional studies.

    The first issue is...

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