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Psychological and work-related outcomes after inpatient multidisciplinary rehabilitation of chronic low back pain: a

P Hampel¹, A Köpnick², S Roch²

¹Institute of Health, Nutrition, and Sport Sciences, Europa-Universität Flensburg, Auf dem Campus 1, 24943, Flensburg, Germany. petra.hampel@uni-flensburg.de.

|February 17, 2019

Abstract

Background:

This study investigated the long-term effects (12 months post-rehabilitation) of a standard inpatient multidisciplinary rehabilitation program for patients with chronic low back pain (CLBP), in which a control group (CG) received pain competence training and an intervention group (IG) received combined pain competence and depression prevention training.

Methods:

In this prospective control group study with cluster-block randomization, a total of n = 583 patients were included into per protocol analyses. To examine the effects of rehabilitation on depressive symptoms, pain self-efficacy, and work ability, patients were stratified in repeated-measures analyses of variance by treatment condition (IG vs. CG), level of depressive symptoms (low vs. high), and time of assessment (pre, post, 6, and 12 months after rehabilitation). The impact of each treatment on pain-related days of sick leave (DSL; dichotomized into ≤ vs. > 2 weeks) was determined separately by conducting non-parametric analyses. Multiple imputations (n = 1225) confirmed the results. Effects were interpreted if clinical significance was given.

Results:

Only patients with high levels of depressive symptoms showed long-term improvements in depressive symptoms and self-efficacy. Long-term improvements in work ability index and mental work ability item were restricted to the IG. Furthermore, long-term effects on pain-related DSL were ascertained by per protocol and multiple imputation analyses only for the IG.

Conclusions:

Patients with high levels of depressive symptoms showed improvements in depressive symptoms and self-efficacy, supporting the psychological effectiveness of both interventions. However, the beneficial long-term effects of rehabilitation on work ability and pain-related DSL among the IG support implementation of combined pain competence and depression prevention training.

Trial Registration:

DRKS00015465 (German Clinical Trial Register DRKS); date of registration: 03.09.2018.

Keywords:

Chronic low back pain Cognitive-behavioral treatment Depressive symptoms Inpatient multidisciplinary rehabilitation Work ability

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