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Psychometric evaluation of a four-item scale derived from the PHQ-9 and GAD-7 among community adults based on multivariate generalizability theory and item response theory

BackgroundThe Patient Health Questionnaire-4 (PHQ-4) consists of the first two items of the Patient Health Questionnaire-9 (PHQ-9) and the first two items of the Generalized Anxiety Disorder-7 (GAD-7). To date, no studies have examined the psychometric properties of this PHQ-4 in a Chinese community...

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Main Authors: Nan Cheng, Chongwei Song, Yang Chen, Jiali Wang, Weiqi Tang, Shifan He, Dejue Men, Jinglin Huang, Wenxiu Zhao, Jianzhong Yin, Qiong Meng
Format: Artigo
Language:Inglês
Published: Frontiers Media S.A. 2026-05-01
Series:Frontiers in Psychology
Subjects:
community adults
item response theory
multivariate generalizability theory
PHQ-4
reliability
validity
Online Access:https://www.frontiersin.org/articles/10.3389/fpsyg.2026.1827821/full
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