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Arthritis Rheum. 1992 Feb;35(2):156-62.

The rapid assessment of disease activity in rheumatology (radar) questionnaire. Validity and sensitivity to change of a patient self-report measure of joint count and clinical status.

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1
Arthritis Center, Boston University School of Medicine, Massachusetts.

Abstract

OBJECTIVE:

This study documents the measurement properties of a brief, self-administered questionnaire of disease signs and symptoms in patients with rheumatoid arthritis.

METHODS:

The Rapid Assessment of Disease Activity in Rheumatology (RADAR) questionnaire assesses joint pain/tenderness and clinical status. One hundred ninety-three pairs of RADAR forms were completed by 45 subjects and their assigned clinician evaluators.

RESULTS:

Subject-clinician agreement (intraclass correlation coefficients [ICC]) for joint pain/tenderness and clinical status ranged from 0.52 to 0.87 (P = 0.0001), with 83% greater than or equal to 0.65. The ICC for change in joint scores over 6 months was 0.83 (P = 0.0001).

CONCLUSION:

The 2-page RADAR questionnaire produces valid estimates of joint count and clinical status that are sensitive to change.

PMID:
1734905
DOI:
10.1002/art.1780350206
[Indexed for MEDLINE]

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