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  1. Case-control studies : matched controls or all available controls ?

    Article - En anglais

    In order to realize the variation in the estimate of the odds ratio from case-control studies, results from individually matched sampling were compared with those from the analysis based on a large number of controls.

    The subjects were selected from those who visited Aichi Cancer Center Hospital from 1988 to 1990.

    Cases consisted of 251 male lung cancer patients aged 40-79 years.

    Age and year of visit matched controls were sampled independently 100 times and 5000 times from non-cancer male outpatients (cases to controls ratio : 1 : 1,1 : 2,1 : 3, and 1 : 4).

    As unmatched controls, all male non-cancer outpatients aged 40-79 years (4100 patients) were used.

    The smoking habit was adopted as an exposure variable.

    Mots-clés Pascal : Echantillon apparié, Echantillonnage, Méthode statistique, Méthodologie, Epidémiologie, Tumeur maligne, Bronchopulmonaire, Homme, Odds ratio, Etude cas témoin, Appareil respiratoire pathologie, Poumon pathologie

    Mots-clés Pascal anglais : Matched sample, Sampling, Statistical method, Methodology, Epidemiology, Malignant tumor, Bronchopulmonary, Human, Case control study, Respiratory disease, Lung disease

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

    Cote : 94-0643078

    Code Inist : 002B30A01A1. Création : 09/06/1995.