title: Development of a core set of domains for data collection in cohorts of patients with ankylosing spondylitis receiving anti-tumor necrosis factor-alpha therapy.
abstract: OBJECTIVE
  To create a core set of measurement concepts for use in the creation and maintenance of anti-tumor necrosis factor-alpha patient registries in ankylosing spondylitis (AS).
  
  
  METHODS
  A Delphi-based approach was used to identify elements that best identify a patient's clinical state, disease progression, and potential drug-related toxicities. Decision-making was based on systematic literature reviews and clinical experience and expertise.
  
  
  RESULTS
  A core set of measurement domains was defined including disease activity and physical function outcomes. Comparison with domains used in existing AS registries showed excellent agreement with current practice.
  
  
  CONCLUSIONS
  This core set is a basis for data collection across AS populations.
authors.affiliation: Menzies Research Institute, Hobart, Australia.
authors.forename: Jane
authors.initials: J
authors.lastname: Zochling
authors.forename: Joachim
authors.initials: J
authors.lastname: Sieper
authors.forename: Désirée
authors.initials: D
authors.lastname: van der Heijde
authors.forename: Jürgen
authors.initials: J
authors.lastname: Braun
mesh_terms: D003697:Delphi Technique; D003710:Demography; D006801:Humans; D012042:Registries; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000188:drug therapy / Q000453:epidemiology*; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors
chemical_list: D014409:Tumor Necrosis Factor-alpha