© 1995 British Society for Rheumatology
research-article |
DISCORDANCE BETWEEN OBJECTIVE AND SUBJECTIVE ASSESSMENT OF FUNCTIONAL ABLITY OF PATIENTS WITH RHEUMATOID ARTHRITIS
Department of Rheumatology, University Hospital Leiden, The Netherlands
*Medical Statistics, University Hospital Leiden, The Netherlands
Correspondence to:
Correspondence to: C.H.M Van den Ende, University Hosiptal Leiden, Department of Rheumatology, BUilding 1, C4-R, Postbox 9600,2300 RC Leiden, The Netherlands
The objective were to investigate whether ther is a discordance between observed and reported functional ability in patients with rheumatoid arthritis (RA) as measured by the Health Assesment Questionnaire (HAQ) and, if so, Which demographic, Clinical and psychological factors contribute to thet discordance. Fifty-one consectutive RA patients of the out-patient cklinic were included. Self-reported functional ability was comapred with the observed performance of tasks as described by the HAQ. The amount of discordance was computed by subtracting reported score from the observed stores . A positive sign stands for overestimation of functional ability by the patient. The average amount of discordance was low, 0.09 (S.D. 0.39), but showed a large range: –0.88 to 1.00. Multiple regression analysis showed that mal;e patients overestimate thier functional ability by 0.21 HAQ units compared with female patients. RA patients overestimated thier functional ability with increasing diesease suration and severity. While RAA patients in the early stage of the disease tend to underestimate thier functional ability.
KEY WORDS: Discordance, Functional ability, Rheumatoid arthritis
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