Summary
A self-administered health-assessment questionnaire (HAQ) was completed by 38 Dutch rheumatoid arthritis (RA) patients and the results compared to those obtained objectively when the same subjects were interviewed and asked to perform standardised tasks included in the HAQ. The results of the interview and the questionnaire showed a high degree of overall correlation and inter-component correlation. The correlation was comparable in outpatients with milder disease and in patients with more severe disease and was not influenced by age. The questionnaire offers a valid approach to the assessment of the functional disability of RA patients.
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Siegert, C.E.H., Vleming, L.J., Van-Denbroucke, J.P. et al. Measurement of disability in Dutch rheumatoid arthritis patients. Clin Rheumatol 3, 305–309 (1984). https://doi.org/10.1007/BF02032335
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DOI: https://doi.org/10.1007/BF02032335