title: The SF-6D Brazil questionnaire: generation models and applications in health economics.
abstract: OBJECTIVE
  Compare the preference measures derived from the SF-36, based on the two Brazilian versions of the Short Form 6 Dimensions questionnaire-Brazil (SF-6D Brazil).
  
  
  METHODS
  Observational and transversal study. The following quality of life assessment instruments were applied: HAQ, SF-36, EQ-5D and SF-6D (1998 and 2002 versions). Descriptive statistics and correlation coefficients were used for data analysis.
  
  
  RESULTS
  The study assessed 200 patients suffering from rheumatoid arthritis, with a mean age of 49.22 years, mean time with the disease of 11.16 years and mean HAQ score of 1.02. Preferences measured by the two versions of the SF-6D and by the EQ-5D showed significant correlations with one another, and Pearson coefficients ranged from 0.59 to 0.88 (p<0.01).
  
  
  CONCLUSIONS
  The most current version of the SF-6D, based on the 2002 model, was found to be valid when compared to the version initially validated to Brazil and is a questionnaire alternative to assess preferences in economic analyses carried out in health care.
authors.affiliation: Universidade Federal de São Paulo, São Paulo, SP.
authors.forename: Alessandro Gonçalves
authors.initials: AG
authors.lastname: Campolina
authors.forename: Adriana Bruscato
authors.initials: AB
authors.lastname: Bortoluzzo
authors.forename: Marcos Bosi
authors.initials: MB
authors.lastname: Ferraz
authors.forename: Rozana Mesquita
authors.initials: RM
authors.lastname: Ciconelli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D001172:Arthritis, Rheumatoid / Q000523:psychology*; D001938:Brazil; D003430:Cross-Sectional Studies; D004470:Economics, Medical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life / Q000523:psychology*; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires; D055815:Young Adult