TY - JOUR
T1 - ’Less is more’
T2 - validation with Rasch analysis of five short-forms for the Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs)
AU - Pellicciari, Leonardo
AU - Piscitelli, Daniele
AU - Basagni, Benedetta
AU - De Tanti, Antonio
AU - Algeri, Lorella
AU - Caselli, Serena
AU - Ciurli, Maria Paola
AU - Conforti, Jessica
AU - Estraneo, Anna
AU - Moretta, Pasquale
AU - Gambini, Maria Grazia
AU - Inzaghi, Maria Grazia
AU - Lamberti, Gianfranco
AU - Mancuso, Mauro
AU - Rinaldesi, Maria Luisa
AU - Sozzi, Matteo
AU - Abbruzzese, Laura
AU - Zettin, Marina
AU - La Porta, Fabio
PY - 2020
Y1 - 2020
N2 - Background: Previous analyses demonstrated a lack of unidimensionality, item redundancy, and substantial administrative burden for the Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs). Objective: To use Rasch Analysis to calibrate five short-forms of the BIRT-PQs, satisfying the Rasch model requirements. Methods: BIRT-PQs data from 154 patients with severe Acquired Brain Injury (s-ABI) and their caregivers (total sample = 308) underwent Rasch analysis to examine their internal construct validity and reliability according to the Rasch model. Results: The base Rasch analyses did not show sufficient internal construct validity according to the Rasch model for all five BIRT-PQs. After rescoring 18 items, and deleting 75 of 150 items, adequate internal construct validity was achieved for all five BIRT-PQs short forms (model chi-square p-values ranging from 0.0053 to 0.6675), with reliability values compatible with individual measurements. Conclusions: After extensive modifications, including a 48% reduction of the item load, we obtained five short forms of the BIRT-PQs satisfying the strict measurement requirements of the Rasch model. The ordinal-to-interval measurement conversion tables allow measuring on the same metric the perception of the neurobehavioral disability for both patients with s-ABI and their caregivers.
AB - Background: Previous analyses demonstrated a lack of unidimensionality, item redundancy, and substantial administrative burden for the Brain Injury Rehabilitation Trust Personality Questionnaires (BIRT-PQs). Objective: To use Rasch Analysis to calibrate five short-forms of the BIRT-PQs, satisfying the Rasch model requirements. Methods: BIRT-PQs data from 154 patients with severe Acquired Brain Injury (s-ABI) and their caregivers (total sample = 308) underwent Rasch analysis to examine their internal construct validity and reliability according to the Rasch model. Results: The base Rasch analyses did not show sufficient internal construct validity according to the Rasch model for all five BIRT-PQs. After rescoring 18 items, and deleting 75 of 150 items, adequate internal construct validity was achieved for all five BIRT-PQs short forms (model chi-square p-values ranging from 0.0053 to 0.6675), with reliability values compatible with individual measurements. Conclusions: After extensive modifications, including a 48% reduction of the item load, we obtained five short forms of the BIRT-PQs satisfying the strict measurement requirements of the Rasch model. The ordinal-to-interval measurement conversion tables allow measuring on the same metric the perception of the neurobehavioral disability for both patients with s-ABI and their caregivers.
KW - behavioral symptoms
KW - Brain injuries
KW - health care
KW - outcome assessment
KW - personality assessment
KW - psychometrics
KW - rehabilitation
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U2 - 10.1080/02699052.2020.1836402
DO - 10.1080/02699052.2020.1836402
M3 - Article
C2 - 33180650
AN - SCOPUS:85096122372
VL - 34
SP - 1741
EP - 1755
JO - Brain Injury
JF - Brain Injury
SN - 0269-9052
IS - 13-14
ER -