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. 1995 Jan;38(1):38-43.
doi: 10.1002/art.1780380106.

Validity and reliability of the twenty-eight-joint count for the assessment of rheumatoid arthritis activity

J S Smolen  1 , F C Breedveld, G Eberl, I Jones, M Leeming, G L Wylie, J Kirkpatrick
Affiliations

Validity and reliability of the twenty-eight-joint count for the assessment of rheumatoid arthritis activity

J S Smolen et al. Arthritis Rheum. 1995 Jan.

Abstract

Objective: To investigate the validity of the 28-joint count for assessment of joint involvement in patients with rheumatoid arthritis (RA).

Methods: Joint involvement as determined by the 28- and the 66/68-joint count was compared using data from 735 prospectively studied RA patients.

Results: The joints included in the 28-joint count were more commonly involved than other joints, and findings from the 28-joint count correlated highly with those from the 66/68-joint count in all analyses.

Conclusion: The 28-joint count is a reliable and valid measure for joint assessment. It is easier to perform than the 66/68-joint count, and it addresses the joints that are critically involved.

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