Fondazione Santa Lucia Clinical and Research Center - IRCCS
Published March 4, 2020 | Version v1
Journal article Open

The unidimensionality of the five Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs) may be improved: preliminary evidence from classical psychometrics

Creators

  • 1. Centro Cardinali Ferrari, Santo Stefano Riabilitazione, Fontanellato, Italy
  • 2. School of Physical and Occupational Therapy, McGill University, Montreal, Canada
  • 3. Neurorehabilitation Research Laboratory, IRCCS San Raffaele Pisana, Rome, Italy;
  • 4. UOC Psicologia, ASST Papa Giovanni XXIII, Bergamo, Italy;
  • 5. Unità Operativa di Medicina Riabilitativa, Dipartimento di Neuroscienze, Azienda Ospedaliero-Universitaria di Modena, Modena, Italy; Scuola di Dottorato in Sanità Pubblica, Università degli Studi di Milano-Bicocca, Milano, Italy
  • 6. Unità Post-Coma Ospedale di Riabilitazione Fondazione Santa Lucia, Rome, Italy
  • 7. IRCCS; Fondazione Don Carlo Gnocchi, Severe Brain Injury Department, Florence, Italy
  • 8. Maugeri Scientific and Clinical Institutes, IRCCS Department of Neurorehabilitation, Institute of Telese Terme, Telese Terme, Italy
  • 9. Dipartimento di riabilitazione, Ospedale Sacro cuore- Don Calabria, Negrar, Verona;
  • 10. Laboratorio di Neuropsicologia, Istituto Clinico Quarenghi, Bergamo, Italy
  • 11. Unità Spinale e Medicina Riabilitativa Intensiva, AUSL Piacenza, Piacenza, Italy
  • 12. Department of Rehabilitation, National Health Service South-Est Tuscany, Grosseto, Italy; Research Centre, Tuscany Rehabilitation Clinic, Montevarchi, Italy
  • 13. Santo Stefano Riabilitazione, Istituto di Riabilitazione Santo Stefano, Porto Potenza Picena, Italy
  • 14. Dipartimento di Scienze Neuroriabilitative, Casa di Cura del Policlinico, Milan, Italy
  • 15. Research Centre, Tuscany Rehabilitation Clinic, Montevarchi, Italy
  • 16. Centro Puzzle, Turin, Italy; Dipartimento di Psicologia, Università di Torino, Turin, Italy
  • 17. Neurorehabilitation Unit, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy

Description

Objective: To assess the internal construct validity (ICV) of the five Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQ) with Classical Test Theory methods. Methods: Multicenter cross-sectional study involving 11 Italian rehabilitation centers. BIRT-PQs were administered to patients with severe Acquired Brain Injury and their respective caregivers. ICV was assessed by the mean of an internal consistency analysis (ICA) and a Confirmatory Factor Analysis (CFA). Results: Data from 154 patients and their respective caregivers were pooled, giving a total sample of 308 subjects. Despite good overall values (alphas ranging from 0.811 to 0.937), the ICA revealed that several items within each scale did not contribute as expected to the total score. This result was
confirmed by the CFA, which showed the misfit of the data to a unidimensional model (RMSEA ranging from 0.077 to 0.097). However, after accounting for local dependency found within the data, fitness to a unidimensional model improved significantly (RMSEA ranging from 0.050 to 0.062). Conclusion: Despite some limitations, our analyses demonstrated the lack of ICV for the BIRT-PQ total scores. It is envisaged that a more comprehensive ICV analysis will be performed with Rasch analysis, aiming to improve both the measurement properties and the administrative burden of each BIRT-PQ.

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Additional details

Identifiers

DOI
10.1080/02699052.2020.1723700