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Assessment in Ankylosing Spondylitis response criteria (ASAS 20/40/50/70)

Anderson Jennifer J; Baron Gabriel; van der Heijde Desiree; Felson David T.; Dougados Maxime

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Basic description

Developed in 2001.
The ASAS Response Criteria (ASAS 20) is defined as an improvement of at least 20% and an absolute improvement of at least 10 units on a 0-100 scale in at least three of the following domains: Patient global assessment, Pain assessment, Function (BASFI), and Inflammation (last 2 questions of BASDAI).
ASAS 40, 50 and 70 are defined as above with improvements of at least 40%, 50% and 70% respectively.

Authors

Anderson Jennifer J; Baron Gabriel; van der Heijde Desiree; Felson David T.; Dougados Maxime

Copyright
No information
Objective
To measure short-term improvement in patients with ankylosing spondylitis
Therapeutic area
  • Skin and Connective Tissue Diseases
  • Musculoskeletal Diseases
  • Immune System Diseases
Therapeutic indication

Arthritis, Rheumatoid

Spondylitis, Ankylosing
Type of Clinical Outcome Assessment (COA)
  • PRO PRO
Original language(s)
  • English for the USA
Bibliographic reference(s) of the original questionnaire

Anderson JJ, Baron G, van der Heijde D, Felson DT, Dougados M. Ankylosing spondylitis assessment group preliminary definition of short-term improvement in ankylosing spondylitis. Arthritis Rheum. 2001 Aug;44(8):1876-86 (Full text article)

Last update: February 2016
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