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  • Title: Does perceived injustice correlate with pain intensity and disability in orthopaedic trauma patients?
    Author: van Leeuwen WF, van der Vliet QM, Janssen SJ, Heng M, Ring D, Vranceanu AM.
    Journal: Injury; 2016 Jun; 47(6):1212-6. PubMed ID: 26994517.
    Abstract:
    INTRODUCTION: Individuals who experience musculoskeletal trauma may construe the experience as unjust and themselves as victims. Perceived injustice is a cognitive construct comprised by negative appraisals of the severity of loss as a consequence of injury, blame, injury-related loss, and unfairness. It has been associated with worse physical and psychological outcomes in the context of chronic health conditions. The purpose of this study is to explore the association of perceived injustice to pain intensity and physical function in patients with orthopaedic trauma. METHODS: A total of 124 orthopaedic trauma patients completed the Injustice Experience Questionnaire (IEQ), the PROMIS Physical Function Computer Adaptive Testing (CAT), the PROMIS Pain Intensity instruments, the short form Patient Health Questionnaire for depression (PHQ-2), the short form Pain Self-Efficacy Questionnaire (PSEQ-2), and the short form Pain Catastrophizing Scale (PCS-4) on a tablet computer. A stepwise linear regression model was used to identify the best combination of predictors explaining variance in PROMIS Physical Function and PROMIS Pain Intensity. RESULTS: The IEQ was associated with PROMIS Physical Function (r=-0.36; P<0.001) and PROMIS Pain Intensity (r=0.43; P<0.001). In multivariable analysis, however, Caucasian race (β=5.1, SE: 2.0, P=0.013, 95% CI: 1.1-9.2), employed work status (β=5.1, SE: 1.5, P=0.001, 95% CI: 2.1-8.2), any cause of injury other than sports, mvc, or fall (β=7.7, SE: 2.1, P<0.001, 95% CI: 3.5-12), and higher self-efficacy (PSEQ-2; β=0.93, SE: 0.23, P<0.001, 95% CI: 0.48-1.4) were selected as part of the best model predicting variance in PROMIS Physical Function. Only a higher degree of catastrophic thinking (PCS-4; β=1.2, SE: 0.12, P<0.001, 95% CI: 0.99 to 1.5) was selected as important in predicting higher PROMIS Pain Intensity. CONCLUSION: Perceived injustice was associated with both physical function and pain intensity in bivariate correlations, but was not deemed as an important predictor when assessed along with other demographic and psychosocial variables in multivariable analysis. This study confirms prior research on the pivotal role of catastrophic thinking and self-efficacy in reports of pain intensity and physical function in patients with acute traumatic musculoskeletal pain.
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