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Journal Article

Citation

Scott W, Trost Z, Milioto M, Sullivan MJ. J. Occup. Rehabil. 2013; 23(4): 557-565.

Affiliation

Department of Psychology, McGill University, 1205 Doctor Penfield Avenue, Montreal, QC, H3A1B1, Canada.

Copyright

(Copyright © 2013, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/s10926-013-9417-1

PMID

23355220

Abstract

Purpose Emerging evidence suggests that perceptions of injustice negatively impact return to work following whiplash injury. The Injustice Experiences Questionnaire (IEQ) is a recently developed measurement tool that may be used to assess injury-related perceptions of injustice following injury. To date, although research has supported the predictive validity of the IEQ, a clinical cut off for interpreting this measure has not been established. Increased support for the validity and clinical interpretation of the IEQ represents a first step towards identifying patients that might benefit from targeted intervention to mitigate the impact of perceived injustice. Methods The IEQ was completed by 103 whiplash-injured patients upon commencement and completion of a standardized multidisciplinary rehabilitation program. One year later, individuals reported on their employment activity, pain severity, and use of narcotics. A receiver operating characteristic (ROC) curve analysis was conducted to identify the post-treatment IEQ score that was optimally associated with unemployment status at the follow-up. Secondary ROC curve analyses examined IEQ scores best associated with high pain severity and narcotic use 1 year following treatment. Results Results indicated that IEQ scores significantly discriminated individuals who returned and did not return to work at the follow-up. An IEQ score of 19 optimally identified participants in terms of follow-up employment status. IEQ scores at the end of treatment also discriminated individuals with high and low pain severity ratings and narcotic use status at the follow-up. Post-treatment IEQ scores of 18 and 20 optimally identified participants who had high pain severity ratings and who were using narcotics at the follow-up, respectively. Conclusions These results further support the validity of the IEQ and provide a guideline for its clinical interpretation in patients with persistent pain and disability following musculoskeletal injury. IEQ scores above the identified cut off may represent a barrier to work return and may warrant targeted intervention.


Language: en

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