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  1. Fulltext. Collapsing ordered outcome categories : A note of concern.

    Article - En anglais

    Fulltext.

    When analyzing and interpreting data from an epidemiologic study where ordinal (ordered categorical) outcomes have been measured in different exposure groups, an effect parameter of interest is the common odds ratio implied by the proportional odds model.

    This model can sometimes be applied to a collapsed outcome variable, instead of the measured variable, without reducing efficiency considerably.

    However, in a given data set, changing the outcome categories can affect the effect estimate as well as the inference being drawn from the data, even if the true effect itself has not changed.

    In particular, one should be careful in dichotomizing the measured outcome variable.

    Mots-clés Pascal : Epidémiologie, Méthodologie, Modèle statistique, Pronostic

    Mots-clés Pascal anglais : Epidemiology, Methodology, Statistical model, Prognosis

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

    Cote : 96-0398491

    Code Inist : 002B30A01A1. Création : 10/04/1997.