School of Psychology, Pontificia Universidad Católica del Ecuador, Manuela Sáenz Av., and Remigio Crespo Street, Ambato, Ecuador.
Departament de Psicología Social, Universitat de Barcelona, Barcelona, Spain.
Child Psychiatry Hum Dev. 2024 Oct;55(5):1413-1422. doi: 10.1007/s10578-023-01501-4. Epub 2023 Feb 9.
The Kessler psychological distress scale is a useful tool for identifying possible psychological problems and has been widely used in research and health services. Unfortunately, its application in various populations has not always been psychometrically supported. For this reason, the present study investigated the psychometric properties of its Spanish version in adolescents, verifying its factorial structure, measurement invariance by gender, internal consistency and the discrimination and difficulty parameters of its items according to the Item Response Theory (IRT). A sample of 5132 Ecuadorian adolescents was evaluated. The sample is equally distributed between male and female participants (50%) and basic and higher education (51% the former). All participants were between 11 and 20 years old. The results show that a 9-item version with correlated intercepts presents the best fit. In addition, it is invariant by gender at a strict level and has adequate internal consistency. IRT analyses indicated that all the items, except for item eight, present adequate discrimination and difficulty. Based on these results, we conclude that the 9-item version of the Psychological Distress Scale is the most appropriate for this population.
凯斯勒心理困扰量表是一种有用的工具，可以识别可能存在的心理问题，已被广泛应用于研究和卫生服务领域。然而，其在不同人群中的应用并不总是具有心理测量学上的支持。出于这个原因，本研究调查了其西班牙语版本在青少年中的心理测量特性，根据项目反应理论（IRT）验证了其因子结构、性别测量不变性、内部一致性以及项目的区分度和难度参数。评估了 5132 名厄瓜多尔青少年的样本。该样本在男性和女性参与者（各占 50%）以及基础教育和高等教育（前者占 51%）之间平均分配。所有参与者的年龄在 11 至 20 岁之间。结果表明，具有相关截距的 9 项版本具有最佳拟合度。此外，其在严格意义上具有性别不变性，并且具有足够的内部一致性。IRT 分析表明，除了第八项外，所有项目的区分度和难度都足够。基于这些结果，我们得出结论，对于该人群，心理困扰量表的 9 项版本是最合适的。
