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dc.contributor.authorBalalla, Shivanthien_NZ
dc.contributor.authorKrägeloh, Chrisen_NZ
dc.contributor.authorMedvedev, Oleg N.en_NZ
dc.contributor.authorSiegert, Richarden_NZ
dc.date.accessioned2020-09-16T21:00:19Z
dc.date.available2020-09-16T21:00:19Z
dc.date.issued2020en_NZ
dc.identifier.citationBalalla, S., Krägeloh, C., Medvedev, O., & Siegert, R. (2020). Is the Rivermead Post-Concussion Symptoms Questionnaire a reliable and valid measure to assess long-term symptoms in traumatic brain injury and orthopedic injury patients? A novel investigation using Rasch analysis. Neurotrauma Reports, 1(1), 63–72. https://doi.org/10.1089/neur.2020.0017en
dc.identifier.urihttps://hdl.handle.net/10289/13829
dc.description.abstractPersistent post-concussion syndrome (PCS) symptoms are known to last years after traumatic brain injury (TBI), and similar symptoms are increasingly being documented among those who have not experienced a TBI. There remains however, a dearth of empirical evidence on the structural composition of symptoms beyond the postacute symptom phase after TBI, and little is known about the potential use of PCS symptom scales to measure PCS-like symptoms in non-TBI individuals. Our objective was therefore to examine the psychometric performance and dimensionality of the Rivermead Post-Concussion Symptoms Questionnaire (RPQ) as a measure of long-term PCS symptoms among a TBI and non-TBI sample. A case-control sample of 223 patients with injury, consisting of age- and sex-matched TBI participants (n = 109) and orthopedic participants (n = 114) were recruited from a regional trauma registry in New Zealand (NZ), and assessed at mean 2.5 years post-injury. Results from the Rasch analysis showed that the RPQ achieved fit to the Rasch model, demonstrating very good reliability (Person Separation Index [PSI] = 0.87), thereby indicating that the measure can be used reliably for individual and group assessment of symptoms among both TBI and orthopedic patients. In this study we demonstrated evidence of a unidimensional construct of PCS symptoms in both groups, which helps alleviate previous uncertainty about factor structure, and permits the calculation of a total RPQ score. Conversion of ordinal to interval total scores presented within are recommended for clinicians and researchers, to improve instrument precision, and to facilitate the interpretation of change scores and use of parametric methods in data analysis.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherMarry Ann Liebert, Inc publishersen_NZ
dc.rights© Shivanthi Balalla et al., 2020; Published by Mary Ann Liebert, Inc. This Open Access article is distributed under the terms of the Creative Commons License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
dc.subjectbrain injuriesen_NZ
dc.subjectorthopedic injuriesen_NZ
dc.subjectpost-concussion syndromeen_NZ
dc.subjectpsychometricsen_NZ
dc.subjectRasch analysisen_NZ
dc.titleIs the Rivermead Post-Concussion Symptoms Questionnaire a reliable and valid measure to assess long-term symptoms in traumatic brain injury and orthopedic injury patients? A novel investigation using Rasch analysisen_NZ
dc.typeJournal Article
dc.identifier.doi10.1089/neur.2020.0017en_NZ
dc.relation.isPartOfNeurotrauma Reportsen_NZ
pubs.begin-page63
pubs.elements-id257358
pubs.end-page72
pubs.issue1en_NZ
pubs.publication-statusPublisheden_NZ
pubs.volume1en_NZ


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