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  1. Poisson regression in mapping cancer mortality.

    Article - En anglais

    The aim of this study was to map standardized mortality ratios (SMRs) of specific cancers in Argentina and to examine some ecological relationships using Poisson regression, Poisson regression with frailties, and empirical Bayes estimates.

    Mortality data for lung cancer, nonmelanoma skin cancer, melanoma, and stomach cancer were obtained from national registers for the period 1989-1993.

    Overcrowding and unsatisfied basic needs (UBN) were used as indicators of socioeconomic status and people working permanently on farms as an indicator of rural activity.

    Empirical Bayes estimates provided a good solution for mapping rare causes of cancer when random fluctuations of observed deaths are important, as in the case of nonmelanoma skin cancer (NMSC) and melanoma.

    In the case of lung and stomach cancers the main improvement was the attenuation of confidence intervals.

    Lung cancer rates (males and females) were higher in jurisdictions with better socioeconomic status.

    When the variable UBN was categorized in tertiles (<20,20-27, and 28% and higher) the rate ratios of lung cancer in men fell to 0.82 IC 95% (0.78-0.85) in those with UNB index among 20-27% with respect to the reference level and to 0.56 IC 95% (0.54-0.59) in those with more than 28%. In contrast, stomach cancer rates were associated with worse economic conditions.

    NMSC and melanoma showed different patterns.

    The former was associated with working on farms, while the latter was not. (...)

    Mots-clés Pascal : Tumeur maligne, Homme, Argentine, Amérique du Sud, Amérique, Epidémiologie, Répartition géographique, Rapport standardisé mortalité, Loi Poisson, Bronchopulmonaire, Mélanome, Carte géographique

    Mots-clés Pascal anglais : Malignant tumor, Human, Argentina, South America, America, Epidemiology, Geographic distribution, Standardized mortality ratio, Poisson distribution, Bronchopulmonary, Melanoma, Map(geography)

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0402378

    Code Inist : 002B04B. Création : 22/03/2000.