Thomas, M and Skilbeck, C and Cannan, P and Slatyer, M, The structure of the Rivermead Post-Concussion Symptoms Questionnaire in Australian adults with traumatic brain injury, Brain Impairment, 19, (2) pp. 166-182. ISSN 1443-9646 (2018) [Refereed Article]
Copyright Australasian Society for the Study of Brain Impairment 2017
Background and aims: Many sustaining traumatic brain injury (TBI) suffer ongoing post-concussion symptoms (PCS). The Rivermead Post-Concussion Symptoms Questionnaire (RPQ) is widely used, although there is disagreement about its structure. This study compared the fit of published RPQ structures with a four-factor structure derived from a large adult sample with TBI in Tasmania.
Method: 661 adults with TBI completed the RPQ at approximately one month post injury. Exploratory factor analysis (EFA), using the first half of the sample (n = 330), suggested a four-factor solution. This was compared with models reported in the literature with the second half of the sample (n = 331), using structural equation modelling. Trajectory of recovery across these factors was examined within subsamples at 1, 3, 6 and 12 months following TBI.
Results: Inter-correlations between items were strongest for somatic, cognitive and emotional functioning items and the EFA identified a four-factor model. Fit was examined utilising bootstrapping for model comparison. The data at 1 month following TBI best fitted the four-factor model (CFI = .95, RMSEA = .060 (.049–.071) and factors had adequate internal consistency (r = .61–.89). This model appeared a good fit and clinically useful across time points to 12 months post injury.
Conclusions: Data best fitted a four-factor model, identified using a rigorous statistical approach. Clinicians and clinical researchers may use this preferred model to provide more specific measurement of the severity of PCS. Future research could attempt replication within international samples.
|Item Type:||Refereed Article|
|Keywords:||Rivermead Post-Concussion Symptoms Questionnaire (RPQ), construct validity, factor structure, concussion, mild traumatic brain injury|
|Research Group:||Biological psychology|
|Research Field:||Behavioural neuroscience|
|Objective Division:||Expanding Knowledge|
|Objective Group:||Expanding knowledge|
|Objective Field:||Expanding knowledge in psychology|
|UTAS Author:||Skilbeck, C (Associate Professor Clive Skilbeck)|
|UTAS Author:||Cannan, P (Miss Philippa Cannan)|
|Web of Science® Times Cited:||5|
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