@article{ref1,
title="The unidimensionality of the five Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs) may be improved: preliminary evidence from classical psychometrics",
journal="Brain injury",
year="2020",
author="Basagni, Benedetta and Piscitelli, Daniele and De Tanti, Antonio and Pellicciari, Leonardo and Algeri, Lorella and Caselli, Serena and Formisano, Rita and Conforti, Jessica and Estraneo, Anna and Moretta, Pasquale and Gambini, Maria Grazia and Inzaghi, Maria Grazia and Lamberti, Gianfranco and Mancuso, Mauro and Quinquinio, Cristina and Sozzi, Matteo and Abbruzzese, Laura and Zettin, Marina and La Porta, Fabio",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="<b>Objective</b>: To assess the internal construct validity (ICV) of the five Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQ) with Classical Test Theory methods.<b>Methods</b>: 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).<b>Results</b>: 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).<b>Conclusion</b>: 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.<p /> <p>Language: en</p>",
language="en",
issn="0269-9052",
doi="10.1080/02699052.2020.1723700",
url="http://dx.doi.org/10.1080/02699052.2020.1723700"
}