Construction of a surrogate variable for impotence in the Massachusetts male aging study.
Uncollected data must be filled in after the fact in many epidemiological studies.
We compared several methods for constructing a surrogate variable for erectile potency, based on responses to related questions, in the Massachusetts Male Aging Study (MMAS).
Quadratic discriminant analysis performed best among the procedures tested, achieving high rates of correct classification in cross-validation of training data and (according to posterior estimates) in classification of MMAS subjects.
Two versions of the surrogate variable were constructed, one involving a discrete classification and the other involving a set of continuous probabilities.
Mots-clés Pascal : Méthode étude, Fonction sexuelle mâle, Impuissance, Vieillard, Analyse discriminante, Régression logistique, Epidémiologie, Classification, Homme, Appareil génital mâle pathologie
Mots-clés Pascal anglais : Investigation method, Male sexual function, Impotence, Elderly, Discriminant analysis, Logistic regression, Epidemiology, Classification, Human, Male genital diseases
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0460871
Code Inist : 002B30A01A1. Création : 199406.