Comparative responsiveness of 3 functional indices in ankylosing spondylitis.
Validity and sensitivity to change of spondylitis specific measures of functional disability.
Brief description: Measurement of patient outcome in arthritis - HAQ-DI article.
A modification of the Health Assessment Questionnaire for the spondyloarthropathies (original English version).
http://www.ncbi.nlm.nih.gov/pubmed/2213762Factors related to change in global health after group physical therapy in ankylosing spondylitis (Dutch).
http://www.ncbi.nlm.nih.gov/pubmed/7641514Continuation of group physical therapy is necessary in ankylosing spondylitis: results of a randomized controlled trial (Dutch).
http://www.ncbi.nlm.nih.gov/pubmed/7857999