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

• César González-Blanch ,

  Roles Funding acquisition, Writing – original draft, Writing – review & editing

  * E-mail: cesar.gonzalezblanch@scsalud.es

  Affiliation Mental Health Centre, University Hospital “Marqués de Valdecilla”- IDIVAL, Santander, Spain

  http://orcid.org/0000-0002-3181-4731

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• Leonardo Adrián Medrano,

  Roles Conceptualization, Formal analysis, Writing – review & editing

  Affiliation Faculty of Psychology, University Siglo 21, Córdoba, Argentina

  ⨯
• Roger Muñoz-Navarro,

  Roles Conceptualization, Writing – review & editing

  Affiliation Department of Basic Psychology, Faculty of Psychology, University of Valencia, Valencia, Spain

  ⨯
• Paloma Ruíz-Rodríguez,

  Roles Writing – review & editing

  Affiliation Castilla La Nueva Primary Care Centre, Health Service of Madrid, Madrid, Spain

  ⨯
• Juan Antonio Moriana,

  Roles Writing – review & editing

  Affiliation Department of Psychology, University of Córdoba/ Maimónides Institute for Research in Biomedicine of Cordoba-IMIBIC/Reina Sofía University Hospital, Córdoba, Spain

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• Joaquín T. Limonero,

  Roles Writing – review & editing

  Affiliation Department of Basic Psychology, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain

  ⨯
• Florian Schmitz,

  Roles Methodology, Writing – review & editing

  Affiliation Department of Psychology, Ulm University, Ulm, Germany

  ⨯
• Antonio Cano-Vindel,

  Roles Conceptualization, Funding acquisition, Supervision, Writing – review & editing

  Affiliation Department of Basic Psychology, University Complutense of Madrid, Madrid, Spain

  ⨯
• on behalf of the PsicAP Research Group

  ¶Membership of the PsicAP Research Group is provided in the Acknowledgments

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