LupusQoL-FR is valid to assess quality of life in patients with systemic lupus erythematosus
2012; Oxford University Press; Volume: 51; Issue: 10 Linguagem: Inglês
10.1093/rheumatology/kes165
ISSN1462-0332
AutoresHervé Devilliers, Zahir Amoura, J.-F. Besancenot, Bernard Bonnotte, Jean‐Louis Pasquali, Denis Wahl, F. Maurier, P. Kaminsky, Jean‐Loup Pennaforte, N. Magy‐Bertrand, Laurent Arnaud, Christine Binquet, Françis Guillemin,
Tópico(s)Systemic Sclerosis and Related Diseases
ResumoObjective. To cross-culturally adapt the LupusQoL into French, to test its measurement properties and to further investigate its domain structure. Methods. The cultural adaptation process according to guidelines and pre-testing resulted in the LupusQoL-FR. SLE patients completed the LupusQoL-FR at baseline, 15 days, 3 months and 6 months. Validity was studied through content and construct validity (factorial and Rasch analysis for structural validity, Spearman's correlation and Mann–Whitney tests for external validity). Cronbach's α and intra-class correlation coefficients were computed for reliability. The standardized response mean was computed to evaluate responsiveness. Results. In all, 182 patients, age 39.6 (10.6) years, mostly outpatients [mean SELENA-SLEDAI 2.6 (3.5)] were recruited. Factor analysis with eight imposed factors was very close to the original LupusQoL. A screeplot with parallel analysis showed that LupusQoL domains could be aggregated in two physical and mental scales. Both eight- and two-factor structures showed a good Rasch fit, internal consistency (Cronbach's α: 0.85–0.95), and test–retest reliability (intra-class correlation coefficient 0.79–0.95). External convergent (correlation with SF-36, r = 0.59–0.78) and divergent validity (according to SELENA-SLEDAI) were also satisfactory. Conclusion. The LupusQoL-FR is valid to assess quality of life in SLE patients. A two-factor structure of physical and mental aggregated scales is a valid alternative to the original eight-domain structure.
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