title: Disease assessment indices: activity, damage and severity.
abstract: The methodology for developing and assessing disease status measures is now well-advanced. For some diseases, in particular SLE and RA, these methods have been applied and instruments either are being or have been validated. For other conditions, such as ankylosing spondylitis and Behçet's disease, there is still a need for reliable measures to be proposed and evaluated.
authors.affiliation: ARC Epidemiology Research Unit, University of Manchester Medical School, UK.
authors.forename: D P
authors.initials: DP
authors.lastname: Symmons
mesh_terms: D006801:Humans; D007596:Joints / Q000503:physiopathology; D010147:Pain Measurement; D011859:Radiography; D015203:Reproducibility of Results; D012216:Rheumatic Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology*; D012720:Severity of Illness Index