Psychometric Properties of the Generalized Anxiety Disorder Scale-7 (GAD-7) in Outpatients with Anxiety and Mood Disorders
Psychometric Properties of the Generalized Anxiety Disorder Scale-7 (GAD-7) in Outpatients with Anxiety and Mood Disorders
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DOI：
10.1007/s10862-016-9571-9
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发表时间：
2017-03-01
影响因子：
1.6
通讯作者：
Brown, Timothy A.
中科院分区：
文献类型：
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作者：
Rutter, Lauren A.;Brown, Timothy A.
本研究探讨了广泛性焦虑障碍量表-7（GAD-7）的心理测量学特性的样本中的536名门诊病人在一个专业诊所的焦虑和情绪障碍。验证性因素分析（CFA）被用来测试GAD-7的单维度。这个模型并不能很好地拟合数据。CFA解决方案是重新指定的相关残差之间的项目评估躯体症状。这个重新定义的模型很好地拟合了数据。一系列多组CFA确定GAD-7的测量特性在性别之间是不变的。量表可靠性估计的GAD-7有利于全样本，男性和女性。在任何临界点，灵敏度和特异性均无法平衡。研究结果证明了该工具作为GAD严重程度的维度指标的价值，而不是焦虑和情绪障碍门诊患者中存在或不存在该障碍的筛查工具。
This study examined the psychometric properties of the Generalized Anxiety Disorder Scale-7 (GAD-7) in a sample of 536 outpatients presenting at a specialty clinic for anxiety and mood disorders. A confirmatory factor analysis (CFA) was used to test the unidimensionality of the GAD-7. This model did not fit the data well. The CFA solution was respecified correlating residuals among items assessing somatic symptoms. This respecified model fit the data well. A series of multiple-groups CFAs determined that the measurement properties of the GAD-7 were invariant between sexes. Scale reliability estimates of the GAD-7 were favorable for the full sample, and for males and females. Sensitivity and specificity could not be balanced at any cut-point. Findings attest to the value of this instrument as a dimensional indicator of GAD severity rather than a screening tool for the presence or absence of the disorder in outpatients with anxiety and mood disorders.