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Abstract
Purpose: This pilot study systematically examined the correlations between the outcome variables pain intensity, disability and health-related quality of life (HRQOL) and between these outcomes and known psychological risk factors for chronic low back pain (CLBP), such as depression, trait anxiety, avoidance- and endurance-related pain responses at two different assessment points. Method: Data from 52 CLBP inpatients treated in an orthopedic clinic were investigated at two points in time: during the first days after admission and 6 months after the termination of the inpatient treatment. Bivariate relationships between pain intensity, disability, HRQOL and psychological variables were examined with the help of Pearson product moment correlations. Furthermore, the differences that exist between correlations at baseline and follow-up were tested for significance. Results: Significant and large differences were found between the correlations with low correlations at baseline and high correlations at the follow-up. Furthermore, HRQOL showed a positive correlation with endurance-related and a negative correlation with avoidance-related pain responses. Conclusions: Focusing on a systematic comparison of two significant assessment time points in CLBP with an acute exacerbation at baseline, the results of this study underlined the recurrent course of LBP. The results highlight that the assessment time points play an important role in CLBP.
Implications for Rehabilitation
Low back pain is a major public health problem with high direct and indirect back-pain-related costs.
Chronic low back pain is a disabling disease which restricts quality of life.
Psychological factors may have a larger impact on disability and quality of life than pain itself.
The recurrent course of low back pain highlights the importance of multidisciplinary pain management even during acute exacerbations of pain.
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Acknowledgements
The authors would like to thank Dr. Christian Smit for his assistance with data collection and two anonymous reviewers for their helpful comments on a former version of this manuscript.
Declaration of Interest: The authors declare no conflicts of interest.