© 2005 by BMJ Publishing Group Ltd & European League Against Rheumatism
DISCUSSION
Assessment: domains and instruments
Discussion: Assessment of psoriatic arthritis
Correspondence to:
Correspondence to:
Dr P J Mease
Seattle Rheumatology Associates, 1101 Madison, Suite 230, Seattle WA 98104, USA; pmease@nwlink.com
Abbreviations: BADSAI, Bath Ankylosing Spondylitis Disease Activity Index; CMC, carpometacarpal (joint); DAS, disease activity score; DIP, distal interphalangeal (joint); PIP, proximal interphalangeal (joint); PsA, psoriatic arthritis; RA, rheumatoid arthritis
Keywords: psoriatic arthritis; GRAPPA
| The first 150 words of the full text of this article appear below. |
Many of the following questions reflect items on the research agenda of the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) for Outcome Measures in Rheumatology (OMERACT) 8 (May 2006) and will have task forces addressing them in the form of research projects, questionnaires, and consensus exercises.
Mease: When we set about to assess joints in the original etanercept trial, our assumption was that we needed to capture a larger number of joints than in typical rheumatoid arthritis (RA) trials, including the DIP joints of both hands and feet, as well as the carpometacarpal (CMC) joints which can be commonly affected, thus using a 76/74 joint count. Some have countered that it is difficult in many patients to assess the DIP joints of the feet, especially the smaller ones, and that assessment of the CMC joint may not be valid. Further, radiologists
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