title: Validation of the English version of the Health-Related Quality of Life for Drug Abusers (HRQoLDA) test.
abstract: BACKGROUND
  The Health-Related Quality of Life for Drug Abusers (HRQoLDA) test was designed to specifically evaluate quality of life among substance users. In this study, the validity and reliability of the English version of the HRQoLDA test are reported for the first time.
  
  
  METHODS
  A sample of 121 participants from inpatient and outpatient treatment facilities completed the HRQoLDA test.
  
  
  RESULTS
  The mean HRQoLDA score was 45.9 (SD = 16.9), while the overall Cronbach's alpha coefficient was 0.905. The factorial analysis of the HRQoLDA test revealed a unidimensional structure. Convergent validity analyses demonstrated significant correlations between the HRQoLDA test scores and the scores of the World Health Organization Quality of Life Assessment-Bref Questionnaire in different dimensions.
  
  
  CONCLUSIONS
  The results revealed that the HRQoLDA was successfully adapted to English. The HRQoLDA is a reliable research instrument for evaluating quality of life of substance users.
authors.affiliation: School of Medicine, University of Western Sydney, Sydney, N.S.W., Australia. zubaran_jr@yahoo.com
authors.forename: Carlos
authors.initials: C
authors.lastname: Zubaran
authors.forename: Rishi
authors.initials: R
authors.lastname: Sud
authors.forename: Jonathan
authors.initials: J
authors.lastname: Emerson
authors.forename: Elham
authors.initials: E
authors.lastname: Zolfaghari
authors.forename: Katia
authors.initials: K
authors.lastname: Foresti
authors.forename: Oscar
authors.initials: O
authors.lastname: Lozano
mesh_terms: D000328:Adult; D015331:Cohort Studies; D055030:Drug Users / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000295:instrumentation; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D019966:Substance-Related Disorders / Q000523:psychology*; D011795:Surveys and Questionnaires