title: A psychometric evaluation of the Icelandic version of the WHO-5.
abstract: The psychometric properties of the Icelandic version of the World Health Organization five wellbeing index (WHO-5) were evaluated using two samples, a randomly selected sample (N = 3,896) from the Icelandic National Registry and a convenience sample of primary care patients (N = 126). The factor structure of the scale was tested with confirmatory factor analysis (CFA). The correlation between the WHO-5 and other measures of depression and anxiety were calculated to assess the scale's convergent and divergent validity. The discriminant validity of the WHO-5 was explored with a receiver operating analysis compared to the Mini International Neuropsychiatric Interview. The CFA indicated that the factor structure of the WHO-5 was one-dimensional and factorial invariant between groups. The internal reliability of the WHO-5 was adequate and the convergent, divergent and discriminant validity of the WHO-5 was supported. It is concluded that the psychometric properties of the Icelandic version of the WHO-5 are satisfactory.
authors.affiliation: Department of Psychology, University of Iceland, Reykjavík, Iceland.
authors.forename: Helga Berglind
authors.initials: HB
authors.lastname: Guðmundsdóttir
authors.forename: Daníel Pór
authors.initials: DP
authors.lastname: Olason
authors.forename: Dóra Guðrún
authors.initials: DG
authors.lastname: Guðmundsdóttir
authors.forename: Jón Friðrik
authors.initials: JF
authors.lastname: Sigurðsson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001007:Anxiety / Q000523:psychology*; D003863:Depression / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006304:Health Status; D006801:Humans; D007055:Iceland; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D010549:Personal Satisfaction; D011594:Psychometrics; D015203:Reproducibility of Results; D055815:Young Adult
keywords: CFA; WHO-5; depression; wellbeing