title: An application of the SF-6D to create heath values in Portuguese working age adults.
abstract: OBJECTIVE
  This study describes the health-related quality of life (HRQOL) of the Portuguese working age population and investigates sociodemographic differences.
  
  
  METHODS
  Subjects randomly selected from the working age population (n=2,459) were assessed using the SF-36v2 and converted into the preference-based SF-6D.
  
  
  RESULTS
  The mean SF-6D utility value was 0.70 (range 0.63-0.73). The mean utility value was lower for the lower educational level than for the highest. Women, people living in rural areas and older adults reported lower levels of utility values. Non-parametric tests showed that health utility values were significantly related to employment; unskilled manual workers reported utility values lower than non-manual workers. For different diseases, mean utility values ranged from 0.58 (sexual diseases) to 0.66 (hepatic conditions). Cluster analysis was adopted to classify individuals into three groups according to their answers to the SF-6D dimensions. Multinomial logit regression was used to detect sociodemographic characteristics affecting the probability of following each cluster pattern. This study yielded normative data by age and gender for the SF-6D.
  
  
  CONCLUSIONS
  The authors conclude that SF-6D is an effective tool for measuring HRQOL in the community so that different population groups can be compared. The preference-based measure used seems to discriminate adequately across sociodemographic differences. These results allow a better understanding of the impact of sociodemographic variables on the burden of illness perception.
authors.affiliation: School of Management, Hospitality and Tourism, University of the Algarve, Faro, Portugal. Lnferrei@ualg.pt
authors.forename: Lara Noronha
authors.initials: LN
authors.lastname: Ferreira
authors.forename: Pedro Lopes
authors.initials: PL
authors.lastname: Ferreira
authors.forename: Luís Nobre
authors.initials: LN
authors.lastname: Pereira
authors.forename: John
authors.initials: J
authors.lastname: Brazier
mesh_terms: D000293:Adolescent; D000328:Adult; D001294:Attitude to Health; D002908:Chronic Disease; D016000:Cluster Analysis; D005260:Female; D006304:Health Status; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D011174:Portugal; D011788:Quality of Life; D011795:Surveys and Questionnaires; D055815:Young Adult