Cross-cultural adaptation of the Quality of Life after Brain Injury (QOLIBRI) questionnaire in patients after traumatic brain injury in Morocco

ObjectivesIndividuals after traumatic brain injury (TBI) commonly experience a variety of symptoms that impact their daily life functioning. This study aims to evaluate the applicability, validity, and reliability of the health-related Quality of Life after Brain Injury (QOLIBRI) questionnaire in the Moroccan context.MethodsThis multicentric cross-sectional study included 203 individuals after TBI in medical centers from three different cities at a mean of 4.92 (+/- 6.02) months post-injury. Demographic and clinical factors, and health-related quality-of-life outcomes were assessed. The QOLIBRI psychometric properties were assessed using classical (reliability and validity) and modern (Rating Scale Model; RSM) test theory frameworks.ResultsThe Moroccan version of the QOLIBRI questionnaire demonstrated satisfactory to excellent internal consistency (0.81-0.90) and test-retest reliability (0.86-0.91). The RSM demonstrated acceptable infit (0.623-1.676) and outfit indices (0.627-1.533), supporting the one-dimensionality of the subscales. The models had values indicating a good fit, with a slightly better fit in the six-factor model (chi 2(614) = 1094, RMSEA = 0.062 [CI: 0.056-0.068], SRMR = 0.074, and CFI = 0.989).ConclusionsThe Moroccan version of the QOLIBRI was found to be valuable, meaningful, and met psychometric criteria when administered to individuals after TBI.Implications for rehabilitationThe successful cross-cultural adaptation and validation of the Quality of Life after Brain Injury (QOLIBRI) questionnaire, a disease-specific instrument, provides a valuable tool for assessing health-related quality of life in Moroccan patients with traumatic brain injury.QOLIBRI instrument can help identify specific areas of impairment and guide the development of individualized rehabilitation plans.Rehabilitation professionals should consider incorporating the QOLIBRI questionnaire into their clinical practice to assess the health-related quality of life of individuals with traumatic brain injury.Rehabilitation professionals should be aware of the age and sex-specific differences in traumatic brain injury presentation and recovery.