Kim Yang Eun, Lee Boram
Department of Global Child Education, Woosong University, Daejeon, Republic of Korea.
Department of Early Childhood Education, Woosong University, Daejeon, Republic of Korea.
Psychiatry Investig. 2019 Dec;16(12):904-910. doi: 10.30773/pi.2019.0226. Epub 2019 Dec 25.
Depressive symptoms among university students are a major mental-health issue worldwide, and university students are particularly vulnerable to various stressors that can produce depression. Therefore, accurate and sustainable assessment of depressive symptoms among university students is of special importance. The Patient Health Questionnaire-9 (PHQ-9) is one such measure. The objective of the current study was to evaluate the psychometric properties of the PHQ-9 among Korean university students.
A total sample of 582 university students attending a four-year private university in South Korea was recruited for the study. Confirmatory factor analyses (CFAs) were performed to compare the goodness-of-fit of four competing models suggested by extant literature on the PHQ-9. Convergent validity was assessed using a correlation analysis between the PHQ-9 and other psychiatric instruments, including the Depression, Anxiety, and Stress Scale-21 (DASS-21) and the Generalized Anxiety Disorder Scale (GAD-7).
A one-factor structure of the PHQ-9 provided the best fit to the data. Internal consistency was adequate. The PHQ-9 demonstrated good convergent validity with related constructs.
The psychometric properties of the PHQ-9 proved to be adequate, with a robust and interpretable factor structure and good internal consistency. The PHQ-9's validity, reliability, brevity and ease of administration make it a useful screening instrument for depression among university students in Korea.
大学生的抑郁症状是全球范围内的一个主要心理健康问题，而且大学生特别容易受到各种可能导致抑郁的压力源的影响。因此，准确且可持续地评估大学生的抑郁症状尤为重要。患者健康问卷-9（PHQ-9）就是这样一种测评工具。本研究的目的是评估PHQ-9在韩国大学生中的心理测量特性。
本研究招募了韩国一所四年制私立大学的582名大学生作为总样本。进行验证性因素分析（CFA）以比较现有文献中关于PHQ-9的四种竞争模型的拟合优度。使用PHQ-9与其他精神科测评工具（包括抑郁、焦虑和压力量表-21（DASS-21）和广泛性焦虑障碍量表（GAD-7））之间的相关性分析来评估收敛效度。
PHQ-9的单因素结构对数据的拟合效果最佳。内部一致性良好。PHQ-9与相关结构具有良好的收敛效度。
PHQ-9的心理测量特性被证明是合适的，具有稳健且可解释的因素结构和良好的内部一致性。PHQ-9的效度、信度、简洁性和易于实施使其成为韩国大学生抑郁筛查的有用工具。
