Differential Item Functioning (DIF) in composite health measurement scale: Recommendations for characterizing DIF with meaningful consequences within the Rasch model framework

• Alexandra Rouquette ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing

  * E-mail: alex.rouquette@gmail.com

  Affiliations AP-HP, Bicêtre Hôpitaux Universitaires Paris Sud, Public Health and Epidemiology Department, Le Kremlin-Bicêtre, France, CESP, INSERM, Université Paris-Sud, Université Versailles Saint-Quentin, Université Paris-Saclay, Paris, France, EA 4360—APEMAC, Université de Lorraine, Université Paris-Descartes, Paris, France

  http://orcid.org/0000-0002-2473-1719

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• Jean-Benoit Hardouin,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Supervision, Validation, Writing – original draft, Writing – review & editing

  Affiliations INSERM U1246 –SPHERE « MethodS in Patients-centered outcomes and HEalth REsearch », University of Nantes, University of Tours, Nantes, France, Biostatistics and Methodology Unit, CHU de Nantes, Nantes, France

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• Alexis Vanhaesebrouck,

  Roles Data curation, Formal analysis, Visualization, Writing – original draft

  Affiliation AP-HP, Bicêtre Hôpitaux Universitaires Paris Sud, Public Health and Epidemiology Department, Le Kremlin-Bicêtre, France

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• Véronique Sébille,

  Roles Methodology, Validation, Writing – original draft, Writing – review & editing

  Affiliations INSERM U1246 –SPHERE « MethodS in Patients-centered outcomes and HEalth REsearch », University of Nantes, University of Tours, Nantes, France, Biostatistics and Methodology Unit, CHU de Nantes, Nantes, France

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• Joël Coste

  Roles Conceptualization, Investigation, Methodology, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  Affiliations EA 4360—APEMAC, Université de Lorraine, Université Paris-Descartes, Paris, France, AP-HP, Hôtel-Dieu Hospital, Biostatistics and Epidemiology Department, Paris, France

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