title: Critical evaluation of quadratic logistic discriminant analysis methods: a case study.
abstract: Electrocardiographic measurements from two groups, patients with left ventricular hypertrophy and clinically normal cases, were analyzed to illustrate the performance of the linear logistic discrimination method in the case of very unequal covariance matrices. Two quadratic extensions of the linear model were critically investigated. The use of graphical methods to check the model has been stressed and illustrated.
authors.forename: E
authors.initials: E
authors.lastname: Lesaffre
authors.forename: J L
authors.initials: JL
authors.lastname: Willems
authors.forename: J
authors.initials: J
authors.lastname: Pardaens
authors.forename: E C
authors.initials: EC
authors.lastname: Van der Meulen
mesh_terms: D001699:Biometry; D006332:Cardiomegaly / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography; D005069:Evaluation Studies as Topic; D006801:Humans; D007256:Information Systems