Factor structure and measurement invariance across various demographic groups and over time for the PHQ-9 in primary care patients in Spain

PloS One
César González-BlanchPsicAP Research Group

Abstract

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 a...Continue Reading

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Citations

Aug 25, 2020·International Journal of Mental Health and Addiction·Jeff Huarcaya-VictoriaMaría Alejandra Luna-Cuadros
Mar 9, 2019·Journal of Autism and Developmental Disorders·Samuel R C ArnoldLauren P Lawson
Dec 24, 2019·Frontiers in Psychology·Andrew Denovan, Neil Dagnall
Oct 23, 2020·Arthritis Care & Research·Karen L Smarr, Autumn L Keefer
May 21, 2019·Journal of Affective Disorders·Melissa L Harry, Stephen C Waring
Jun 1, 2021·Frontiers in Psychology·Jeroen De ManEmily D Williams
Aug 20, 2021·Aging & Mental Health·Darío Moreno-AgostinoRicardo Araya

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ISRCTN58437086

Software Mentioned

AMOS

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