Facultad de Psicología y Humanidades, Universidad San Sebastián, Santiago, Chile.
Department of Mathematics and Computer Science, University of Santiago, Santiago, Chile.
PLoS One. 2024 May 31;19(5):e0304623. doi: 10.1371/journal.pone.0304623. eCollection 2024.
The PHQ-4 is an ultrabrief screening test for depression and anxiety symptoms. The psychometric properties of this test among the population in Chile are unknown. This study was aimed to determine the factor structure of the PHQ-4 in the adult population in Chile, and to assess its measurement invariance across different groups.
The study considered a nationally representative sample of 10921 people aged 18 and above, in Chile in 2021. Exploratory and confirmatory factor analysis were conducted, and configural, metric, scalar, and strict measurement invariance were assessed.
The two-factor structure of the PHQ-4 supported the two underlying constructs of depression and anxiety. This model explained 67% of the variance and had excellent fit (CFI: 0.9999; TLI: 0.9994; RMSEA: 0.0107; SRMR: 0.0022). Strict measurement invariance held across gender, age, area of residence, household income quintile, immigrant or host population, and indigenous or non-indigenous population (ΔCFI<0.01).
The PHQ-4 can be used to assess depressive and anxiety symptoms in population studies, and as a screening test for depression and anxiety in public mental health programs in Chile.
PHQ-4 是一种用于筛查抑郁和焦虑症状的超简短测试。该测试在智利人群中的心理测量学特性尚不清楚。本研究旨在确定 PHQ-4 在智利成年人群中的因子结构，并评估其在不同群体中的测量不变性。
本研究考虑了 2021 年智利全国范围内 10921 名 18 岁及以上人群的代表性样本。进行了探索性和验证性因子分析，并评估了组态、度量、标度和严格测量不变性。
PHQ-4 的两因素结构支持抑郁和焦虑这两个潜在结构。该模型解释了 67%的方差，具有极好的拟合度（CFI：0.9999；TLI：0.9994；RMSEA：0.0107；SRMR：0.0022）。在性别、年龄、居住地区、家庭收入五分位数、移民或本地人口以及土著或非土著人口方面，严格的测量不变性得以维持（ΔCFI<0.01）。
PHQ-4 可用于评估人群研究中的抑郁和焦虑症状，也可用于智利公共心理健康计划中的抑郁和焦虑筛查。
