Validity of the Brazilian version of WHOQOL-BREF in depressed patients using Rasch modelling
DOI:
https://doi.org/10.1590/S0034-89102009000100019Keywords:
Depression, Quality of Life, Questionnaires, World Health Organization, Translations, Validation StudiesAbstract
OBJECTIVE: To assess the validity of the Brazilian version of the World Health Organization Quality of Life Instrument - Abbreviated version (WHOQOL-BREF) in adults with major depression, using Rasch modelling. METHODS: Study analyzing data from the baseline sample of the Longitudinal Investigation of Depression Outcomes in Brazil, including a total of 208 patients with major depression recruited in a primary care service in Porto Alegre (Southern Brazil), in 1999. The Center for Epidemiological Studies Depression Scale was used to assess intensity of depression; the WHOQOL-BREF to assess generic quality of life; and the Composite International Diagnostic Interview version 2.1 for the diagnosis of depression. RESULTS: In the Rasch analysis, the four domains of WHOQOL-BREF showed appropriate fit to this model. Some items needed adjustments: four items were rescored (pain, finances, services, and transport); two items (work and activity) were identified as having dependency of responses, and one item was deleted (sleep) due to multidimensionality. CONCLUSIONS: The validation of the WHOQOL-BREF Brazilian version using Rasch analysis complements previous validation studies, evidencing the robustness of this instrument as a generic cross-cultural quality of life measure.Downloads
Published
2009-02-01
Issue
Section
Original Articles
How to Cite
Rocha, N. S. da, & Fleck, M. P. de A. (2009). Validity of the Brazilian version of WHOQOL-BREF in depressed patients using Rasch modelling . Revista De Saúde Pública, 43(1), 147-153. https://doi.org/10.1590/S0034-89102009000100019