Objective: To explore the factor structure of the European Brain Injury Questionnaire and to assess the cross-cultural and construct validity of this questionnaire by using Rasch analysis.
Participants: A total of 366 individuals with traumatic brain injury or stroke were recruited from 3 different countries: Spain (116 participants), the United Kingdom (110 participants), and France (140 participants).
Analyses: We first performed a factor analysis and then applied Rasch analysis to the resulting factors to examine construct and cross-cultural validity.
Results: Three subscales labeled Depressive Mood, Cognitive Dysfunction, and Poor Social and Emotional Self-regulation were extracted using the factor analysis. In the Rasch analyses, 8 items were removed because of misfit and 7 items showed differential item functioning by country.
Conclusion: Rasch analyses showed good fit to the model, unidimensionality, construct validity, and good reliability of the 3 European Brain Injury Questionnaire subscales. However, only the Depressive and Cognitive subscales showed cross-cultural validity.
Personalidad, Evaluación y Tratamiento Psicológico Department and Neurosciences Institute F. Olóriz, University of Granada, Spain (Drs Caracuel, Verdejo-García, and Pérez-Garcia); The Oliver Zangwill Centre for Neuropsychological Rehabilitation, Ely, Cambridgeshire, United Kingdom (Dr Bateman); and Department of Psychology, University of Copenhagen, Denmark (Dr Teasdale).
Corresponding Author: Alfonso Caracuel, PhD, Personalidad, Evaluación y Tratamiento Psicológico Department and Neurosciences Institute F. Olóriz, University of Granada, Facultad de Psicologia, 18710, Granada, Spain (firstname.lastname@example.org).
The original development of the EBIQ was done under the leadership and direction of the late Professor Gérard Deloche, who also provided the French data incorporated here.
The authors declare no conflicts of interest.