Format

Send to

Choose Destination
Arthritis Rheum. 1994 Apr;37(4):470-5.

Reduced joint counts in controlled clinical trials in rheumatoid arthritis.

Author information

1
Vanderbilt University School of Medicine, Nashville, Tennessee 37232-2681.

Abstract

OBJECTIVE:

To determine if quantitative assessment of a reduced number of joints provides information equivalent to that obtained by the traditional 60-joint evaluation in detecting changes in patients participating in clinical trials of rheumatoid arthritis (RA).

METHODS:

The changes in quantitative joint scores of patients from 3 previously reported clinical trials were compiled and compared with changes in quantitative scores derived using a reduced number of joints. Effect sizes were calculated (mean change in joint score/standard deviation of joint score) and compared for the different joint indices.

RESULTS:

The effect sizes of the joint scores derived using a reduced number of joints were similar to those of the original 60-joint score. The reduced joint count scores revealed significant changes for clinical trials involving as few as 15 patients.

CONCLUSION:

Reduced joint count scores may be used to evaluate the results of clinical trials without decreasing the ability to detect change over time. Quantitative assessment of a reduced number of joints may also facilitate assessment of responses to treatment in the routine care of patients with RA.

PMID:
8147923
DOI:
10.1002/art.1780370406
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center