title: Leave 'em alone - why continuous variables should be analyzed as such.
authors.forename: Carl
authors.initials: C
authors.lastname: van Walraven
authors.forename: Robert G
authors.initials: RG
authors.lastname: Hart
mesh_terms: D015986:Confounding Factors, Epidemiologic; D015987:Effect Modifier, Epidemiologic; D005163:Factor Analysis, Statistical; D006801:Humans; D017063:Outcome Assessment, Health Care