title: WHOQOL-BREF psychometric properties in a sample of smokers.
abstract: OBJECTIVE
  To study the World Health Organization Quality of Life Instrument Bref psychometric properties in a sample of smokers. It is a self-administered instrument to evaluate quality of life. It contains 26 questions allocated to 4 domains: Social, Psychological, Physical and Environmental, there are 2 questions related to the Global domain.
  
  
  METHODS
  The sample was formed by 276 tobacco users selected at random. The instruments applied were: World Health Organization Quality of Life Instrument Bref, Fagerström Test for Nicotine Dependence, and Medical Outcomes Study Short-Form 36-item. The statistical analysis was accomplished up by ANOVA, Cronbach's alpha, Pearson's Coefficient and Multiple Regression.
  
  
  RESULTS
  The World Health Organization Quality of Life Instrument Bref presented good reliability (Cronbach's alpha 0.9207), converging validation (0.382<r<0.753; p<0.001), discriminant validation and criterion validation (0.554<r<0.778; p<0.001).
  
  
  CONCLUSIONS
  The World Health Organization Quality of Life Instrument Bref proved to be an adequate instrument, with a good level of reliability, being easily and quickly administered.
authors: Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil. mgdc@uol.com.br
authors: Maria da Graça
authors: Mda G
authors: Castro
authors: Margareth da Silva
authors: Mda S
authors: Oliveira
authors: Alessandra Cecília
authors: AC
authors: Miguel
authors: Renata Brasil
authors: RB
authors: Araujo
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D018434:Sickness Impact Profile; D012907:Smoking / Q000523:psychology*; D011795:Surveys and Questionnaires / Q000592:standards*; D014029:Tobacco Use Disorder / Q000175:diagnosis* / Q000523:psychology; D014944:World Health Organization