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  1. Abortion and breast cancer risk.

    Article - En anglais

    The relationship between spontaneous and induced abortions and breast cancer risk was analyzed using data from a case-control study conducted between June 1991 and February 1994 in 6 Italian centers on 2,569 histologically confirmed incident breast cancer cases and 2,588 controls admitted to hospital for a wide range of acute, non-neoplastic, non-hormone-related diseases.

    One or more abortions were reported by 31% of cases and 32% of controls, corresponding to a multivariate odds ratio (OR) of 1.0 (95% confidence interval epsilonCIzêta, 0.8-I.

    I). No trend in risk was observed with increasing number of total abortions or spontaneous and induced abortions separately.

    No significant relationship was found between the risk of breast cancer and history of spontaneous or induced or total abortions in separate strata of age at diagnosis, number of children, time of abortion in relation to first birth and family history of breast cancer.

    When abortion was the outcome of the first pregnancy, the OR was 1.2 for spontaneous and 1.3 for induced abortion, in relation to women with birth as outcome of the first pregnancy, and 1.0 and I. I, respectively, when the reference category was nulligravidae.

    Thus, our results indicate a lack of association between induced and spontaneous abortions and breast cancer risk.

    Mots-clés Pascal : Tumeur maligne, Glande mammaire, Homme, Epidémiologie, Facteur risque, Avortement, Spontané, Avortement provoqué, Etude multicentrique, Italie, Europe, Glande mammaire pathologie, Santé publique, Gestation pathologie, Etude cas témoin

    Mots-clés Pascal anglais : Malignant tumor, Mammary gland, Human, Epidemiology, Risk factor, Abortion, Spontaneous, Induced abortion, Multicenter study, Italy, Europe, Mammary gland diseases, Pregnancy disorders, Case control study

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

    Cote : 96-0152714

    Code Inist : 002B20E02. Création : 199608.