title: Numerical index of the discriminatory ability of typing systems: an application of Simpson's index of diversity.
abstract: An index of discrimination for typing methods is described, based on the probability of two unrelated strains being characterized as the same type. This index may be used to compare typing methods and select the most discriminatory system.
authors.affiliation: Division of Hospital Infection, Central Public Health Laboratory, London, England.
authors.forename: P R
authors.initials: PR
authors.lastname: Hunter
authors.forename: M A
authors.initials: MA
authors.lastname: Gaston
mesh_terms: D001419:Bacteria / Q000145:classification*; D001431:Bacteriological Techniques; D008962:Models, Theoretical; D012703:Serotyping / Q000379:methods