Authors
Zhicheng Luo, Yuqian Li, Yitan Hou, Haiqing Zhang, Xiaotian Liu, Xinling Qian, Jingjing Jiang, Yan Wang, Xue Liu, Xiaokang Dong, Dou Qiao, Fang Wang, Chongjian Wang
Publication date
2019/9/1
Journal
General hospital psychiatry
Volume
60
Pages
50-56
Publisher
Elsevier
Description
Objective
The two-item generalized anxiety disorder scale (GAD-2) has been investigated in different populations, but with limited evaluation in the Chinese population. This study aimed to validate the diagnostic accuracy of GAD-2 for identifying GAD through a validation study along with an updated meta-analysis.
Methods
We recruited 694 adults in 2015 from “the Henan Rural Cohort study” where the GAD-7 questionnaire was adopted as the gold standard diagnosis. Receiver operating characteristics (ROC) curve and Cronbach's α were determined. Furthermore, a meta-analysis was conducted to evaluate the effectiveness of the GAD-2.
Results
In this study, 37 patients [5.33%; 95% confidence interval (CI): 3.78–7.27%] met the criteria for current GAD. The GAD-2 showed a Cronbach's alpha of 0.806 and an area under the ROC curve (AUC) of 0.954 (95% CI: 0.936–0.968). At a cutoff of 3, GAD-2 had highest …
Scholar articles
Z Luo, Y Li, Y Hou, H Zhang, X Liu, X Qian, J Jiang… - General hospital psychiatry, 2019