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  1. Time since childbirth and prognosis in primary breast cancer : population based study.

    Article - En anglais

    Objective 

    To investigate whether time since birth of last child was of prognostic importance in women with primary breast cancer.

    Design 

    Retrospective cohort study based on a population based database of breast cancer diagnoses with detailed information on tumour characteristics, treatment regimens, reproductive factors, and vital status.

    Setting 

    Denmark.

    Subjects 

    5652 women with primary breast cancer aged 45 years or less at the time of diagnosis.

    Main outcome measures 

    5 and 10 year survival ; relative risk of dying.

    Results 

    Women diagnosed in the first 2 years after last childbirth had a crude 5 year survival of 58.7% and 10 year survival of 46.1% compared with 78.4% and 66.0% for women whose last childbirth was more than 2 years before their diagnosis.

    After adjustment for age, reproductive factors, and stage of disease (tumour size, axillary nodal status, and histological grading), a diagnosis sooner than 2 years since last childbirth was significantly associated with a poor survival (relative risk 1.58,95% confidence interval 1.24 to 2.02) compared with women who gave birth more than 5 years previously.

    Further analyses showed that the effect was not modified by age at diagnosis, tumour size, and nodal status.

    Conclusion 

    A diagnosis of breast cancer less than 2 years after having given birth is associated with a particularly poor survival irrespective of the stage of disease at debut. (...)

    Mots-clés Pascal : Carcinome, Glande mammaire, Etude cohorte, Naissance, Rétrospective, Facteur risque, Relation mère enfant, Pronostic, Danemark, Europe, Femelle, Homme, Tumeur maligne, Glande mammaire pathologie, Pédiatrie

    Mots-clés Pascal anglais : Carcinoma, Mammary gland, Cohort study, Birth, Retrospective, Risk factor, Mother child relation, Prognosis, Denmark, Europe, Female, Human, Malignant tumor, Mammary gland diseases, Pediatrics

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

    Cote : 97-0515682

    Code Inist : 002B20C02. Création : 13/02/1998.