Portuguese version of the quality of life enjoyment and satisfaction questionnaire: a validation study
Open accessAbstract
OBJECTIVE: The aim of this study was to demonstrate the validity and reliability of the Portuguese version of the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) among substance users in southern Brazil. METHODS: The original English version of the Q-LES-Q was translated into Portuguese taking into account semantic and conceptual equivalence. The Portuguese versions of the Q-LES-Q and the World Health Organization Quality of Life Instrument (WHOQOL-BREF) were used to assess quality of life among crack cocaine and inhalant users. Factorial and reliability analyses as well as correlation studies were conducted to establish the psychometric properties of the Portuguese version of the Q-LES-Q. RESULTS: All areas of the Q-LES-Q achieved significant Cronbach's coefficients. Significant Pearson correlation coefficients were obtained between various subscales of the Q-LES-Q and the four dimensions of the WHOQOL-BREF. Correlations were significant when crack and inhalant users were analyzed separately or conjointly. Inhalant users presented significantly higher scores than crack users in the social (p=0.035) and general (p=0.005) subscales of the Q-LES-Q. CONCLUSION: The Portuguese version of the Q-LES-Q possesses sound internal validity. The English version of the Q-LES-Q was adequately adapted to Portuguese. Inhalant users may present lower levels of satisfaction with social life and overall quality of life than crack users. The Portuguese version of the Q-LES-Q is a reliable questionnaire for future research and clinical use with substance users in Brazil.
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The Q-LES-Q-SF was translated and validated for Portuguese (Cronbach's alpha = 0.78).
“The Q-LES-Q-SF includes 16 items and has been translated and validated (Cronbach’s alpha = 0.78) into Portuguese.44”
From Improved quality of life and reduced depressive symptoms in medical students after a single-session intervention (2020) · cites this paper as [44]
The Quality-of-life assessment section describes the short form as 14 general-activities items plus two additional items, and the Discussion supports its Portuguese adaptation and validation. But Table 2 reports Cronbach’s alpha of 0.84 for general activities, the short form—not 0.78. The 0.78 value belongs to the work subscale. Page numbers were not available in our copy. (LLM, conf=0.92)
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- Authors
- Zubaran, C., Foresti, K., Thorell, M. R., Franceschini, P. R., & Homero, W.
- Affiliations
- Santa Casa Hospital (BR)
- Universidade de Caxias do Sul (BR)
- Venue
- Revista Panamericana de Salud Pública
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2009-05
- Volume
- 25
- Issue
- 5
- Pages
- 443-8
- ISSN
- 1020-4989 (ISSN-L)
- OpenAlex
- W2140285242
- Cited by
- 24
- References
- 30
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2022: 3 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 3
- FWCI
- 1.35
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Locations
- Revista Panamericana de Salud Pública (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Social Sciences › Education › Health Education and Validation
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Keywords
- Q-LES-Q, Portuguese translation, psychometric validation, quality of life, substance users, crack cocaine users, WHOQOL-BREF, cross-cultural adaptation, internal validity, reliability statistics
- MeSH terms
- Adolescent, Brazil, Female, Humans, Language, Male, Personal Satisfaction, Quality of Life, Substance-Related Disorders, Young Adult
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