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Citation

von Steinbuechel N, Rauen K, Bockhop F, Covic A, Krenz U, Plass AM, Cunitz K, Polinder S, Wilson L, Steyerberg EW, Maas AIR, Menon D, Wu Y & Zeldovich M (2021) Psychometric Characteristics of the Patient-Reported Outcome Measures Applied in the CENTER-TBI Study. Journal of Clinical Medicine, 10 (11), Art. No.: 2396. https://doi.org/10.3390/jcm10112396

Abstract
Traumatic brain injury (TBI) may lead to impairments in various outcome domains. Since most instruments assessing these are only available in a limited number of languages, psychometrically validated translations are important for research and clinical practice. Thus, our aim was to investigate the psychometric properties of the patient-reported outcome measures (PROM) applied in the CENTER-TBI study. The study sample comprised individuals who filled in the six-months assessments (GAD-7, PHQ-9, PCL-5, RPQ, QOLIBRI/-OS, SF-36v2/-12v2). Classical psychometric characteristics were investigated and compared with those of the original English versions. The reliability was satisfactory to excellent; the instruments were comparable to each other and to the original versions. Validity analyses demonstrated medium to high correlations with well-established measures. The original factor structure was replicated by all the translations, except for the RPQ, SF-36v2/-12v2 and some language samples for the PCL-5, most probably due to the factor structure of the original instruments. The translation of one to two items of the PHQ-9, RPQ, PCL-5, and QOLIBRI in three languages could be improved in the future to enhance scoring and application at the individual level. Researchers and clinicians now have access to reliable and valid instruments to improve outcome assessment after TBI in national and international health care.

Keywords
psychometric properties; patient-reported outcome measures; traumatic brain injury; classical test theory

Journal
Journal of Clinical Medicine: Volume 10, Issue 11

• Published version