eLetters

77 e-Letters

published between 2001 and 2004

  • Response to Dr Adamiak
    Ana V. Diez Roux

    Dear Editor

    I thank Dr Adamiak for her careful reading of the glossary. I believe the confusion may be motivated by the fact that the sentence she refers to is not as clearly stated as it could have been. By "in the case of continuous dependent variables" I meant more precisely "when the response variable is normally distributed and the link function is identity (ie models usually referred to as linear models)". By "i...

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  • Other factors
    Michael P. Harlow

    Dear Editor

    It would be interesting to know the overall health condition of the subjects. Were they average weight, average stressed occupations, diets. What other environmental conditions could have contributed to their heart problems, if any.

  • Supply inducement and mortality rates - bias and confounding
    Grazyna T Adamiak

    Dear Editor

    The Authors draw conclusion that the use of acute hospital beds does not increase as the population ages, which is a result from a seven year cohort study in Germany. The problem is however that there are supply related factors, which can strongly affect the results. It is known that there are substitutions between different forms of care.[1] The days spent in hospitals and the mortality rates, in part...

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  • Population average and logistic models
    Grazyna T Adamiak

    Dear Editor

    I have found that under the heading Population-average models (page 592), when comparing the multilevel models to population-average models, the Author is stating that in the case of continuous dependent variables the coefficients are mathematically equivalent in the marginal models. In the next phrase the Author suggest "...but in the case of non-normally distributed variables (for example, logistic...

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  • Employment relations are the basis for new UK official class measure
    Mel Bartley

    Dear Editor

    Professor Muntaner's cricism of the neglect of power relations in research on health inequality is well timed. The 2001 Census of England and Wales has used as its social classification a new measure: the National Statistics Socio-economic classification (NS-SEC). This measure has an explicit theoretical basis in the relations and conditions of employment. It therefore distinguishes those who own pr...

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  • Learing from the TBA
    Cory Mermer

    Dear Editor

    Modern obstetritions in developed nations would do well to emulate Traditional Birth Attendents. These women are much less apt to cause iatrogenic injury, which is so often unknowingly done by OB/GYNs in modern actively managed births when the umbilical cord is clamped almost immediately. This prevents normal placental transfusion and causes hypoxia and hypovolemia in the newborn.

    For more i...

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  • New directions
    Guillermo Llanos

    Dear Editor

    I think it is time to renew ideas at PAHO. Drs Roses and Casas had been high level officers for many years, why did not they implemented their suggestions? Dr Sepúlveda is a bright public health man from Mexico, with an oustanding curriculum. Lets work towards improving PAHO's activities with new people.

  • Re: Psychosocial factors and Public Health. Authors' reply to the eLetter by John Macleod
    Tores Theorell
    Dear Editor

    The discussion triggered by this paper is a useful one. In general I agree with McLeod, and Davey Smith that we have to be careful when we make conclusions regarding etiology. Socioeconomic factors could certainly confound the relationships. Adjustment for socioeconomic factors could also conceal true relationships, however. In this literature (see the review by Schnall et al. 2000 which has been referred...

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  • Psychosocial factors and health: response by Macleod and Davey Smith to authors' reply
    John Macleod

    Dear Editor

    We are grateful to Peter and colleagues for taking the trouble to respond to our e-letter. They raise several issues that we will try to address briefly.

    First, they say effort-reward imbalance had no relation to socio-economic status in their study. We are unclear how they assessed this – the only SES measure they mention in their paper is a white-collar/blue- collar binary distinction. Effort–r...

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  • Re: Psychosocial factors and Public Health. Authors' reply to the e-letter by John Macleod
    Richard Peter

    Dear Editor

    We agree with John Macleod concerning the importance of a better understanding of social inequalities in health. Yet, the paper to which he refers (Peter et al., 2002) [1] was not primarily intended to explain social inequalities, but rather to demonstrate an improved prediction of CHD risk by combining standardized measures of two innovative theoretical concepts of psychosocial stress at work. M...

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