Merino-Soto César, Angulo-Ramos Marisol, Rovira-Millán Lillian V, Rosario-Hernández Ernesto
Instituto de Investigación de Psicología, Universidad de San Martín de Porres, Lima, Perú.
Sociedad Científica Peruana de Enfermería Pediátrica, Lima, Peru.
Front Psychiatry. 2023 Mar 27;14:999242. doi: 10.3389/fpsyt.2023.999242. eCollection 2023.
To evaluate the psychometric properties of the GAD-7 by obtaining evidence of internal structure (dimensionality, precision and differential functioning of items) and association with external variables.
A total of 2,219 protocols from three different studies conducted with Puerto Rican employees that administered the GAD-7 were selected for the current study. Item response theory modeling was used to assess internal structure, and linear association with external variables.
The items were adapted to a graduated response model, with high similarity in the discrimination and location parameters, as well as in the precision at the level of the items and in the total score. No violation of local independence and differential item functioning was detected. The association with convergent (work-related rumination) and divergent (work engagement, sex, and age) variables were theoretically consistent.
The GAD-7 is a psychometrically robust tool for detecting individual variability in symptoms of anxiety in workers.
通过获取内部结构（维度、精确性和项目的差异功能）的证据以及与外部变量的关联，评估广泛性焦虑障碍量表（GAD - 7）的心理测量特性。
本研究选取了三项针对波多黎各员工进行的不同研究中总共2219份使用了GAD - 7的协议。采用项目反应理论模型来评估内部结构以及与外部变量的线性关联。
这些项目适用于等级反应模型，在区分度和位置参数方面，以及在项目水平和总分的精确性方面具有高度相似性。未检测到违反局部独立性和项目差异功能的情况。与收敛变量（与工作相关的反复思考）和发散变量（工作投入、性别和年龄）的关联在理论上是一致的。
GAD - 7是一种在心理测量方面稳健的工具，用于检测员工焦虑症状的个体差异。
