Key result
The French version of the HAQ Functional Disability Index successfully discriminated between groups, with mean scores of 1.332 in early RA, 1.745 in longstanding RA, and 0.152 in controls (p<10^-5).
Why the study?
Is the French version of the HAQ valid and discriminant for measuring functional disability in early rheumatoid arthritis?
Cross-Sectional (n=141)
Is the French version of the HAQ valid and discriminant for measuring functional disability in early rheumatoid arthritis?
Absolute Event Rate: 1.332% vs 0.152%
p-value: p=<10(-5)
The French version of the HAQ is a valid, reproducible, and discriminant tool for assessing functional disability in early rheumatoid arthritis.
Supports French HAQ for disability assessment in early RA; leaves open need for longitudinal validation before routine adoption.
A sensitive and valid instrument is needed in the earliest stages of rheumatoid arthritis (RA) for the measurement of functional disability. A French version of the Health Assessment Questionnaire Functional Disability Index (HAQ) has been developed, validated in an early RA sample (i.e. with disease duration less than 5 yr; n = 50), and compared with longstanding RA (n = 32) and control subjects (n = 59). Five factors provided by principal components analysis accounted for 75% of the variability of the HAQ score (construct validity). It appeared to be significantly correlated with clinical and radiological variables and to be reproducible (r intraclass = 0.964). It proved to be discriminant in groups with various levels of disability (HAQ score = 1.332 in early RA, 1.745 in longstanding RA, and 0.152 in controls; p less than 10(-5). Finally, the validity of the original scoring method of the HAQ, as compared with other scoring methods, was confirmed.
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Guillemin et al. (1992) conducted a cross-sectional in Rheumatoid arthritis (n=141). French version of the Health Assessment Questionnaire Functional Disability Index (HAQ) vs. Longstanding RA and controls was evaluated on HAQ score (p=<10(-5)). The French version of the HAQ Functional Disability Index successfully discriminated between groups, with mean scores of 1.332 in early RA, 1.745 in longstanding RA, and 0.152 in controls (p<10^-5).
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