Psychometric properties of the 7-item Generalized Anxiety Disorder Scale (GAD-7) in a large representative sample of Finnish adolescents
Psychometric properties of the 7-item Generalized Anxiety Disorder Scale (GAD-7) in a large representative sample of Finnish adolescents
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芬兰青少年大样本7项广泛性焦虑障碍量表（GAD-7）的心理测量学特征
DOI：
10.1016/j.psychres.2018.12.004
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发表时间：
2019-02-01
影响因子：
11.3
通讯作者：
Marttunen, Mauri
中科院分区：
文献类型：
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作者：
Tiirikainen, Kati;Haravuori, Henna;Marttunen, Mauri
广泛性焦虑障碍（GAD）的症状在青少年中很常见，可导致严重的社会心理障碍，但缺乏一个高质量的量表来衡量年轻人的广泛性焦虑症状。7项广泛性焦虑障碍量表（GAD-7）是一种用于测量广泛性焦虑症症状的自我报告量表，已在成人人群中得到验证，但测量青少年的心理特征尚不清楚。本研究的目的是在全国具有代表性的青少年样本中调查GAD-7的信度、析因效度和结构效度。我们的研究基于芬兰对111,171名14-18岁青少年的调查数据。结果表明，GAD-7在青少年中具有良好的心理测量特性。GAD-7的内部一致性较好（Cronbach’s alpha = 0.91），支持仪器的一维因子结构。GAD-7总分与抑郁和社交焦虑自我报告测量的关联支持结构效度。在青少年样本中，GAD-7的心理测量特性与在成年人中报告的相似。然而，需要进行诊断访谈的研究来证明该措施在该年龄组的诊断功效。
Symptoms of generalized anxiety disorder (GAD) are common among adolescents and can lead to severe psychosocial impairment, yet there is a lack of a good quality scale to measure symptoms of generalized anxiety in young people. The 7-item Generalized Anxiety Disorder Scale (GAD-7) is a self-report scale used to measure GAD symptoms and has been validated in adult populations, but the measures psychometric properties regarding adolescents are unknown. The aim of this study was to investigate the reliability, factorial validity, and construct validity of the GAD-7 in adolescents in a nationally representative sample from a general population. Our study was based on Finnish survey data on 111,171 adolescents aged 14-18 years. Our results show that the GAD-7 demonstrates good psychometric properties in adolescents. The internal consistency of the GAD-7 was good (Cronbach's alpha = 0.91) and the instrument's unidimensional factor structure was supported. The associations of GAD-7 sum scores with self-report measures of depression and social anxiety supported construct validity. The psychometric properties of the GAD-7 in this sample of adolescents were similar to those reported among adults. However, studies in which diagnostic interviews are performed are needed to demonstrate the diagnostic efficacy of the measure in this age group.