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  1. Defining exposure in case-control studies : a new approach.

    Article - En anglais

    Many epidemiologists conducting case-control studies choose to dichotomize their exposure data to make the analysis of the data easier and its presentation more straightforward.

    The choice of a specific rule for dichotomization can have a large effect on the outcome measure, the odds ratio, although this effect is rarely studied.

    The authors present a graphic approach for exploring this effect, the quantile-quantile (Q-Q) plot.

    By examining a Q-Q plot, an investigator simultaneously gains information about the distribution of exposures among cases, the distribution of exposures among controls, and odds ratios at all possible cutpoints and their standard errors.

    Mots-clés Pascal : Homme, Amérique du Nord, Amérique, Age, Mère, Facteur risque, Poids naissance faible, Nouveau né, Epidémiologie, Méthodologie, Analyse statistique, Etats Unis

    Mots-clés Pascal anglais : Human, North America, America, Age, Mother, Risk factor, Low birth weight, Newborn, Epidemiology, Methodology, Statistical analysis, United States

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

    Cote : 91-0477841

    Code Inist : 002B30A. Création : 199406.