AUTHOR=Vu Linh Gia , Le Linh Khanh , Dam Anh Vu Trong , Nguyen Son Hoang , Vu Thuc Thi Minh , Trinh Trang Thu Hong , Do Anh Linh , Do Ngoc Minh , Le Trang Huyen , Latkin Carl , Ho Roger C. M. , Ho Cyrus S. H. 

TITLE=Factor Structures of Patient Health Questionnaire-9 Instruments in Exploring Depressive Symptoms of Suburban Population

JOURNAL=Frontiers in Psychiatry

VOLUME=13

YEAR=2022

URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2022.838747

DOI=10.3389/fpsyt.2022.838747

ISSN=1664-0640

ABSTRACT=<sec><title>Background</title><p>This study aims to examine the psychometric properties of the nine-item Patient Health Questionnaire (PHQ-9) and assess the relationship between the PHQ-9 domain and demographics and health behaviors in Vietnamese people.</p></sec><sec><title>Materials and Methods</title><p>The PHQ9 was administered to 899 participants. Exploratory factor and reliability analyses were performed. Tobit regression and Ordered logistic regression were further performed to determine factors associated with the PHQ-9 score and characteristics of depression.</p></sec><sec><title>Results</title><p>The 2-factor model of PHQ-9, including factor 1 “Somatic” and factor 2 “Cognitive/Affective,” showed good psychometric properties. The Cronbach’s alpha value showed high internal consistency in two factors (0.84 and 0.80, respectively). Gender, health behavior exercising, drinking, and health status had associations with both factors of the PHQ-9 model.</p></sec><sec><title>Conclusion</title><p>The PHQ-9 scale is a valid and reliable instrument to assess depression in the Vietnam population. This scale can be a useful screening tool for depression; however, further validation studies in other populations are required.</p></sec>