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  1. A relative power table for nested matched case-control studies.

    Article - En anglais


    To calculate relative powers for nested case-control studies for different values of both relative risk and numbers of controls per case, given a fixed number of cases available for analysis.

    Methods-Algebraic and numerical methods


    In nested case-control studies, statistical power is a function of relative risk, rarity of exposure, number of case-control sets, and the number of controls per case.

    Conclusion-The dictum that sufficient power will be obtained in a nested case-control study by selecting only four controls per case cannot be sustained.

    Appropriate numbers need to be calculated for specific studies.

    Mots-clés Pascal : Etude statistique, Méthodologie, Biais méthodologique, Etude cas témoin, Echantillonnage, Homme, Validité, Analyse statistique, Puissance test

    Mots-clés Pascal anglais : Statistical study, Methodology, Methodological bias, Case control study, Sampling, Human, Validity, Statistical analysis, Test power

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

    Cote : 99-0100788

    Code Inist : 002B30A01A1. Création : 16/11/1999.