© 1994 British Society for Rheumatology
research-article |
VALIDITY OF EUROQOL—A GENERIC HEALTH STATUS INSTRUMENT—IN PATIENTS WITH RHEUMATOID ARTHRITIS
ECONOMIC AND HEALTH OUTCOMES RESEARCH GROUP:
*Economic and Health Outcomes Research Group, Rheumatic Diseases Unit, Western General Hospital, Edinburgh
Department of Medical Statistics, Medical School, University of Edinburgh
The main aim of this pilot study was to test the ‘construct’ validity of Euroqol, a new generic health status instrument which consists of a questionnaire and visual analogue scale. Its ability to measure both current health status and change in health status was assessed in 55 patients with RA. The Euroqol questionnaire and visual analogue scales showed significant and clinically relevant correlations with other condition-specific instruments measuring loss of function, joint pain, joint tenderness and mood; change in these symptoms as measured by the condition-specific instruments was also predictive of change in Euroqol scores. Either component of the Euroqol instrument provide an index of current clinical status and these data provide preliminary evidence for the ‘construct’ validity of Euroqol in RA. Further work is needed to evaluate more fully the sensitivity of Euroqol to change over time.
KEY WORDS: Euroqol, Rheumatoid arthritis, Health outcome, Construct validity, Function, Mood
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