Lima-Castro Sandra, Arias-Medina Paúl, Bueno-Pacheco Alexandra, Peña-Contreras Eva, Aguilar-Sizer Mónica, Cabrera-Vélez Marcela
Faculty of Psychology, University of Cuenca, Av. 12 de abril y Agustín Cueva, Cueca, Ecuador.
Faculty of Philosophy, Letters and Educational Sciences, Universidad del Azuay, Av. 24 de mayo 7-77 and Hernán Malo. Section: 01.01.981, Cuenca, Ecuador.
Psicol Reflex Crit. 2021 Oct 7;34(1):29. doi: 10.1186/s41155-021-00194-9.
The short version of the World Health Organization Quality of Life questionnaire (WHOQOL-BREF) is a popular instrument used to assess quality of life. The objective of this study was to evaluate the following psychometric properties: structural validity, convergent validity, internal consistency, and measurement invariance across sex of the WHOQOL-BREF in a sample of Ecuadorian adults.
We used a sample of undergraduates (n = 987) to assess the WHOQOL-BREF original four-factor structure, a model with correlated factors, a hierarchical model, and two models resulting from the exploratory factor analysis and exploratory graph analysis. All the models were evaluated using confirmatory factor analysis.
The results of the exploratory factor analysis and exploratory graph analysis suggest that the items are organized into four factors, although differently from the original version and the orthogonality assumption is not maintained. The confirmatory factor analysis shows that the original WHOQOL-BREF structure with correlated factors presents adequate psychometric properties. However, we propose a four-factor structure that has the best psychometric properties and adequate internal consistency. The results of the measurement invariance show that strict and strong invariance is achieved between men and women. Convergent validity analysis reveals moderate correlations with self-esteem, resilience, and social support.
Despite the original version of the WHOQOL-BREF with correlated factors has acceptable psychometric properties in the Ecuadorian context, we propose a version with a different organization of its items, which is consistent with the findings of other investigations.
世界卫生组织生活质量问卷简表（WHOQOL - BREF）是一种用于评估生活质量的常用工具。本研究的目的是评估WHOQOL - BREF在厄瓜多尔成年人样本中的以下心理测量学特性：结构效度、收敛效度、内部一致性以及跨性别的测量不变性。
我们使用了一个本科生样本（n = 987）来评估WHOQOL - BREF的原始四因素结构、一个具有相关因素的模型、一个层次模型以及探索性因素分析和探索性图形分析得出的两个模型。所有模型均使用验证性因素分析进行评估。
探索性因素分析和探索性图形分析的结果表明，这些项目被组织成四个因素，尽管与原始版本不同，且正交性假设未得到维持。验证性因素分析表明，具有相关因素的原始WHOQOL - BREF结构具有足够的心理测量学特性。然而，我们提出了一个具有最佳心理测量学特性和足够内部一致性的四因素结构。测量不变性的结果表明，男性和女性之间实现了严格和强不变性。收敛效度分析揭示了与自尊、复原力和社会支持的中度相关性。
尽管在厄瓜多尔背景下，具有相关因素的WHOQOL - BREF原始版本具有可接受的心理测量学特性，但我们提出了一个项目组织方式不同的版本，这与其他研究的结果一致。
