title: Conceptualizing and defining outcome.
authors.forename: A
authors.initials: A
authors.lastname: Tennant
authors.forename: S P
authors.initials: SP
authors.lastname: McKenna
mesh_terms: D006233:Persons with Disabilities; D006801:Humans; D017063:Outcome Assessment, Health Care; D011788:Quality of Life; D012216:Rheumatic Diseases / Q000150:complications*; D012720:Severity of Illness Index