Web of Science: 44 cites, Scopus: 46 cites, Google Scholar: cites,
Factor structure and measurement invariance across various demographic groups and over time for the PHQ-9 in primary care patients in Spain
González Blanch, César (Hospital Universitario Marqués de Valdecilla (Santander, Cantabria))
Medrano, Leonardo Adrián (Universidad Siglo 21 (Córdoba, Argentina))
Muñoz Navarro, Roger (Universitat de València. Departament de Psicologia Bàsica)
Ruíz Rodríguez, Paloma (Servicio Madrileño de Salud)
Moriana, Juan Antonio (Universidad de Córdoba. Departamento de Psicología)
Limonero García, Joaquim T. (Joaquim Timoteo) (Universitat Autònoma de Barcelona. Departament de Psicologia Bàsica, Evolutiva i de l'Educació)
Schmitz, Florian (Universität Ulm)
Cano Vindel, Antonio (Universidad Complutense de Madrid. Departamento de Psicología Básica)

Data: 2018
Resum: The Patient Health Questionnaire (PHQ-9) is a widely-used screening tool for depression in primary care settings. The purpose of the present study is to identify the factor structure of the PHQ-9 and to examine the measurement invariance of this instrument across different sociodemographic groups and over time in a sample of primary care patients in Spain. Data came from 836 primary care patients enrolled in a randomized controlled trial (PsicAP study) and a subsample of 218 patients who participated in a follow-up assessment at 3 months. Confirmatory factor analysis (CFA) was used to test one- and two-factor structures identified in previous studies. Analyses of multiple-group invariance were conducted to determine the extent to which the factor structure is comparable across various demographic groups (i. e. , gender, age, marital status, level of education, and employment situation) and over time. Both one-factor and two-factor re-specified models met all the pre-established fit criteria. However, because the factors identified in the two-factor model were highly correlated (r = . 86), the one-factor model was preferred for its parsimony. Multi-group CFA indicated measurement invariance across different demographic groups and across time. The present findings suggest that physicians in Spain can use the PHQ-9 to obtain a global score for depression severity in different demographic groups and to reliably monitor changes over time in the primary care setting.
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Llengua: Anglès
Document: Article ; recerca ; Versió publicada
Publicat a: PloS one, 2018 , ISSN 1932-6203

DOI: 10.1371/journal.pone.0193356
PMID: 29474410


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