Bidimensional structure and measurement equivalence of the Patient Health Questionnaire-9: sex-sensitive assessment of depressive symptoms in three representative German cohort studies.


Journal

BMC psychiatry
ISSN: 1471-244X
Titre abrégé: BMC Psychiatry
Pays: England
ID NLM: 100968559

Informations de publication

Date de publication:
05 05 2021
Historique:
received: 07 12 2020
accepted: 12 04 2021
entrez: 6 5 2021
pubmed: 7 5 2021
medline: 5 6 2021
Statut: epublish

Résumé

The Patient Health Questionnaire-9 (PHQ-9) has been proposed as a reliable and valid screening instrument for depressive symptoms with one latent factor. However, studies explicitly testing alternative model structures found support for a two-dimensional structure reflecting a somatic and a cognitive-affective dimension. We investigated the bidimensional structure of the PHQ-9, with a somatic (sleeping problems, fatigability, appetitive problems, and psychomotor retardation) and a cognitive-affective dimension (lack of interest, depressed mood, negative feelings about self, concentration problems, and suicidal ideation), and tested for sex- and regional-differences. We have included data from the GEnder-Sensitive Analyses of mental health trajectories and implications for prevention: A multi-cohort consortium (GESA). Privacy-preserving analyses to provide information on the overall population and cohort-specific information and analyses of variance to compare depressive, somatic and cognitive-affective symptoms between sexes and cohorts were executed in DataSHIELD. In order to determine the dimensionality and measurement invariance of the PHQ-9 we tested three models (1 factor, 2 correlated factors, and bifactor) via confirmatory analyses and performed multi-group confirmatory factor analysis. Differences between sex and cohorts exist for PHQ-9 and for both of its dimensions. Women reported depressive symptoms in general as well as somatic and cognitive-affective symptoms more frequently. For all tested models an acceptable to excellent fit was found, consistently indicating a better model fit for the two-factor and bifactor model. Scalar measurement invariance was established between women and men, the three cohorts, and their interaction. The two facets of depression should be taken into account when using PHQ-9, while data also render support to a general factor. Somatic and cognitive-affective symptoms assessed by the PHQ-9 can be considered equivalent across women and men and between different German populations from different regions.

Sections du résumé

BACKGROUND
The Patient Health Questionnaire-9 (PHQ-9) has been proposed as a reliable and valid screening instrument for depressive symptoms with one latent factor. However, studies explicitly testing alternative model structures found support for a two-dimensional structure reflecting a somatic and a cognitive-affective dimension. We investigated the bidimensional structure of the PHQ-9, with a somatic (sleeping problems, fatigability, appetitive problems, and psychomotor retardation) and a cognitive-affective dimension (lack of interest, depressed mood, negative feelings about self, concentration problems, and suicidal ideation), and tested for sex- and regional-differences.
METHODS
We have included data from the GEnder-Sensitive Analyses of mental health trajectories and implications for prevention: A multi-cohort consortium (GESA). Privacy-preserving analyses to provide information on the overall population and cohort-specific information and analyses of variance to compare depressive, somatic and cognitive-affective symptoms between sexes and cohorts were executed in DataSHIELD. In order to determine the dimensionality and measurement invariance of the PHQ-9 we tested three models (1 factor, 2 correlated factors, and bifactor) via confirmatory analyses and performed multi-group confirmatory factor analysis.
RESULTS
Differences between sex and cohorts exist for PHQ-9 and for both of its dimensions. Women reported depressive symptoms in general as well as somatic and cognitive-affective symptoms more frequently. For all tested models an acceptable to excellent fit was found, consistently indicating a better model fit for the two-factor and bifactor model. Scalar measurement invariance was established between women and men, the three cohorts, and their interaction.
CONCLUSIONS
The two facets of depression should be taken into account when using PHQ-9, while data also render support to a general factor. Somatic and cognitive-affective symptoms assessed by the PHQ-9 can be considered equivalent across women and men and between different German populations from different regions.

Identifiants

pubmed: 33952234
doi: 10.1186/s12888-021-03234-x
pii: 10.1186/s12888-021-03234-x
pmc: PMC8101182
doi:

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

238

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Auteurs

Ana N Tibubos (AN)

Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.

Daniëlle Otten (D)

Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany. Danielle.Otten@unimedizin-mainz.de.

Daniela Zöller (D)

Freiburg Center of Data Analysis and Modelling, Mathematical Institute - Faculty of Mathematics and Physics, University of Freiburg, Freiburg, Germany.

Harald Binder (H)

Freiburg Center of Data Analysis and Modelling, Mathematical Institute - Faculty of Mathematics and Physics, University of Freiburg, Freiburg, Germany.
Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany.

Philipp S Wild (PS)

Preventive Cardiology and Preventive Medicine, Department of Cardiology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.
Center for Thrombosis and Hemostasis, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.
DZHK (German Center for Cardiovascular Research), Partner Site Rhine-Main, Mainz, Germany.

Toni Fleischer (T)

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.
Department of Psychiatry and Psychotherapy, Leipzig University Medical Center, Leipzig, Germany.

Hamimatunnisa Johar (H)

Department of Psychosomatic Medicine and Psychotherapy, University of Gieβen and Marburg, Gieβen, Germany.
Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology, Neuherberg, Germany.

Seryan Atasoy (S)

Department of Psychosomatic Medicine and Psychotherapy, University of Gieβen and Marburg, Gieβen, Germany.
Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology, Neuherberg, Germany.
Department of Psychosomatic Medicine and Psychotherapy, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.

Lara Schulze (L)

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.

Karl-Heinz Ladwig (KH)

Department of Psychosomatic Medicine and Psychotherapy, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.

Georg Schomerus (G)

Department of Psychiatry and Psychotherapy, Leipzig University Medical Center, Leipzig, Germany.

Birgit Linkohr (B)

Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology, Neuherberg, Germany.

Hans J Grabe (HJ)

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany.

Johannes Kruse (J)

Department of Psychosomatic Medicine and Psychotherapy, University of Gieβen and Marburg, Gieβen, Germany.

Carsten-Oliver Schmidt (CO)

Institute for Community Management, University Medicine Greifswald, Greifswald, Germany.

Thomas Münzel (T)

DZHK (German Center for Cardiovascular Research), Partner Site Rhine-Main, Mainz, Germany.
Department of Cardiology - Cardiology I, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.

Jochem König (J)

Institute for Medical Biostatistics, Epidemiology and Informatics, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.

Elmar Brähler (E)

Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.

Manfred E Beutel (ME)

Department of Psychosomatic Medicine and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.

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