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http://dx.doi.org/10.30773/pi.2018.09.27.2

Screening Tool for Anxiety Disorders: Development and Validation of the Korean Anxiety Screening Assessment  

Kim, Yeseul (Department of Psychology, Korea University)
Park, Yeonsoo (Clinical Emotion and Cognition Research Laboratory, Inje University Ilsan Paik Hospital)
Cho, Gyeongcheol (Department of Psychology, McGill University)
Park, Kiho (Department of Psychology, Korea University)
Kim, Shin-Hyang (Department of Psychology, Korea University)
Baik, Seung Yeon (Clinical Emotion and Cognition Research Laboratory, Inje University Ilsan Paik Hospital)
Kim, Cho Long (Clinical Emotion and Cognition Research Laboratory, Inje University Ilsan Paik Hospital)
Jung, Sooyun (Department of Psychology, Korea University)
Lee, Won-Hye (Department of Clinical Psychology, National Center for Mental Health)
Choi, Younyoung (Department of Adolescent Psychology, Hanyang Cyber University)
Lee, Seung-Hwan (Clinical Emotion and Cognition Research Laboratory, Inje University Ilsan Paik Hospital)
Choi, Kee-Hong (Department of Psychology, Korea University)
Publication Information
Psychiatry investigation / v.15, no.11, 2018 , pp. 1053-1063 More about this Journal
Abstract
Objective This study evaluated the psychometric properties of the Korean Anxiety Screening Assessment (K-ANX) developed for screening anxiety disorders. Methods Data from 613 participants were analyzed. The K-ANX was evaluated for reliability using Cronbach's alpha, item-total correlation, and test information curve, and for validity using focus group interviews, factor analysis, correlational analysis, and item characteristics based on item response theory (IRT). The diagnostic sensitivity and specificity of the K-ANX were compared with those of the Beck Anxiety Inventory (BAI) and Generalized Anxiety Disorder 7-item scale (GAD-7). Results The K-ANX showed excellent internal consistency (${\alpha}=0.97$) and item-total coefficients (0.92-0.97), and a one-factor structure was suggested. All items were highly correlated with the total scores of the BAI, GAD-7, and Penn State Worry Questionnaire. IRT analysis indicated the K-ANX was most informative as a screening tool for anxiety disorders at the range between 0.8 and 1.6 (i.e., top 21.2 to 5.5 percentiles). Higher sensitivity (0.795) and specificity (0.937) for identifying anxiety disorders were observed in the K-ANX compared to the BAI and GAD-7. Conclusion The K-ANX is a reliable and valid measure to screen anxiety disorders in a Korean sample, with greater sensitivity and specificity than current measures of anxiety symptoms.
Keywords
Screening tool; Anxiety disorder; GAD; Item response theory; Validation;
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