title: [Dimensional validity of WHOQOL-BREF in health workers].
abstract: This study's objective was to revisit the internal consistency and convergent and discriminant factorial validity of the Brazilian version of WHOQOL-BREF, in a cross-sectional study of 386 health workers. Confirmatory factor analysis was used to test WHOQOL-BREF's structure (24 and 26 items) and the model suggested by exploratory factor analysis. Internal consistency was measured through composite reliability; convergent and discriminant validity by average variance extracted and factor correlations. The best-fit model, suggested by exploratory factor analysis (26 items), had 6 factors: 4 theoretically proposed (general, psychological, social relationships, and environment) and 2 obtained by subdividing the physical domain. Items "energy" and "security" (from physical and environment domains) were relocated to the psychological domain. Composite reliability was good (> 0.70), except for the general factor. Convergent and discriminant validity were adequate for social relationships and physical 2. Controversies on WHOQOL-BREF's dimensionality persist, particularly in the physical domain.
authors.affiliation: Instituto de Pesquisa Clínica Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brasil. lobodinis@gmail.com
authors.forename: Marcelle Maria Lobo Dinis
authors.initials: MM
authors.lastname: Castro
authors.forename: Yara Hahr Marques
authors.initials: YH
authors.lastname: Hökerberg
authors.forename: Sonia Regina Lambert
authors.initials: SR
authors.lastname: Passos
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil; D003430:Cross-Sectional Studies; D005163:Factor Analysis, Statistical; D005260:Female; D006282:Health Personnel / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D055815:Young Adult