New methodologies allow the scores for the Health Assessment Questionnaire-Disability Index (HAQ-DI) to be translated into preferences/utility scores. We evaluated the construct validity of the HAQ-DI-derived Short Form-6D (SF-6D) score and assessed its responsiveness to change over 6- and 12-month followup periods in patients with early aggressive rheumatoid arthritis (RA).
Validating and assessing the sensitivity of the Health Assessment Questionnaire-Disability Index-derived Short Form-6D in patients with early aggressive rheumatoid arthritis.
Division of Rheumatology, University of California Los Angeles School of Medicine, Department of Health Services, 1000 Veteran Avenue, Room 32-59, Rehabilitation Center, Los Angeles, CA 90095, USA.
