OBJECTIVE: To compare the preference measurements of the SF-36, derived from two Brazilian versions of the questionnaire Short Form 6 Dimensions - Brazil (SF-6D Brazil). METHODS: Cross-sectional study. We applied the tools to assess quality of life: HAQ, SF-36, EQ-5D and SF-6D (version 1998 and 2002). Descriptive statistics and correlation coefficients were used for data analysis. RESULTS: We studied 200 patients with rheumatoid arthritis, with a mean age of 49.22 years, 11.16 years of disease and mean HAQ 1.02. Preferences measured by the two versions of the SF-6D and the EQ-5D showed significant correlations between each other, with Pearson coefficients ranging from 0.59 to 0.88 (p <0.01). CONCLUSION: The latest version of the SF-6D based on the model 2002 is presented as a valid measurement when compared to the originally validated questionnaire in Brazil and represents an option for assessing preferences for economic analyses conducted in this country.
Arthritis, rheumatoid; Quality of life; Quality-adjusted life years
