• Anne Marie Plass, Dominique Van Praag, Amra Covic, Anastasia Gorbunova, Ruben Real, Nicole von Steinbuechel, and Dutch and Flemish CENTER TBI investigators.
• Institute of Medical Psychology and Medical Sociology, University Medical Center Göttingen (UMG)/ Georg-August-University, Göttingen, Germany.
• Plos One. 2019 Jan 1; 14 (10): e0210138.

BackgroundTraumatic brain injury (TBI) is one of the most common neurological conditions. It can have wide-ranging physical, cognitive and psychosocial effects. Most people recover within weeks to months after the injury, but a substantial proportion are at risk of developing lasting post-concussion symptoms. The Rivermead Post-Concussion Syndrome Questionnaire (RPQ) is a short validated 16-items self-report instrument to evaluate post-concussive symptoms. The aim of this study was to test psychometrics characteristics of the current Dutch translation of the RPQ.MethodsTo determine the psychometric characteristics of the Dutch RPQ, 472 consecutive patients six months after they presented with a traumatic brain injury in seven medical centers in the Netherlands (N = 397), and in two in Belgium (Flanders) (N = 75) took part in the study which is part of the large prospective longitudinal observational CENTER-TBI-EU-study. Psychometric properties at six months post TBI, were assessed using exploratory and confirmatory factor analyses. Sensitivity was analyzed by comparing RPQ scores and self-reported recovery status of patients with mild vs. moderate and severe TBI.FindingsThe Dutch version of RPQ proved good, showing excellent psychometric characteristics: high internal consistency (Cronbach's α .93), and good construct validity, being sensitive to self-reported recovery status at six months post TBI. Moreover, data showed a good fit to the three dimensional structure of separate cognitive, emotional and somatic factors (Chi2 = 119; df = 117; p = .4; CFI = .99; RMSEA = .006), reported earlier in the literature.DiscussionPsychometric characteristics of the Dutch version of RPQ proved excellent to good, and can the instrument therefore be applied for research purposes and in daily clinical practice.

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