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  1. The interaction between age and comorbidity contributes to predicting the mortality of geriatric patients in the acute-care hospital.

    Article - En anglais

    Objective

    To test the predictive power of comorbidity and of the interaction between age and comorbidity in geriatric patients with acute medical illness.

    Design

    Prospective observational study.

    Setting.

    Medical and geriatric wards of an acute-care hospital.

    Subjects

    Three hundred and seventy patients over 70 years of age consecutively admitted in an 18-month period.

    Main outcome measure

    In-hospital mortality.

    Method

    On admission a multidimensional assessment was performed, and a comorbidity index and an age-comorbidity index developed on a comparable training population were calculated.

    The comorbidity index is based upon a scoring system that quantifies the prognostic weight of individual diseases, while the age-comorbidity index corrects the former for the age-related increase of the risk of death.

    The predictive power of variables univariately correlated with the outcome was tested by logistic regression.

    Results

    Death was independently predicted by clinical diagnosis of malnutrition (odds ratio=1.87, confidence limits CL=1.20-2.86), age-comorbidity index>7 (odds ratio=1.77, CL=1.15-2.72), preadmission impairment in activities of daily living (odds ratio=1.74, CL=1.13-2.69), lymphocytopenia (odds ratio=1.74, CL=1.15-2.61).

    A weaker predictive model was obtained by substituting the comorbidity index for the index of age-comorbidity.

    Excluding comorbidity from the logistic regression greatly weakened the predictive model.

    Mots-clés Pascal : Association morbide, Mortalité, Age, Pronostic, Echelle évaluation, Evaluation performance, Vieillard, Homme

    Mots-clés Pascal anglais : Concomitant disease, Mortality, Age, Prognosis, Evaluation scale, Performance evaluation, Elderly, Human

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

    Cote : 98-0043428

    Code Inist : 002B30A01A2. Création : 17/04/1998.