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  1. The influence of climate on suicidal behaviour in Italy.

    Article - En anglais

    A growing number of studies report an asymmetry in the seasonal distribution of suicides, with a peak in the late spring months for both sexes.

    The aim of this study is to verify if the climate, apart from its seasonal change, exerts a direct influence on suicidal behaviour.

    To this end, deaths by suicide in 17 Italian towns which all have a meteorologic station have been analyzed, taking into account some climatic indicators.

    Results of analyses show an unequal distribution of suicides with respect to latitude, with a peak in the North.

    The distribution of deaths by suicide shows a negative relationship with mean yearly temperature values, max and min, and with sun exposure indicators, and a positive, but less significant relationship with rainfall values.

    As far as climatic variables considered as a whole are concerned, stepwise regression identifies three relevant factors with significant relationships to suicide rates : humidity grade, rainfall mean, and sunlight exposure.

    These three climatic indicators explain up to 63% (Adj R2) of the variance in the distribution of suicide rates for both genders, with sunlight exposure offering the most significant contribution, when regressed on suicide rates via a multiple regression model.

    Higher suicide rates, therefore, correspond to dry places which are less exposed to the sun. (...)

    Mots-clés Pascal : Suicide, Italie, Europe, Influence, Climat, Variation géographique, Température atmosphérique, Ensoleillement, Prévalence, Epidémiologie, Santé mentale, Homme

    Mots-clés Pascal anglais : Suicide, Italy, Europe, Influence, Climate, Geographical variation, Atmospheric temperature, Sunshine, Prevalence, Epidemiology, Mental health, Human

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

    Cote : 98-0280687

    Code Inist : 002B18C11. Création : 27/11/1998.