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Sunday, December 25, 2022

The effectiveness of low‐dosed outpatient biopsychosocial interventions compared to active physical interventions on pain and disability in adults with nonspecific chronic low back pain: a systematic review with meta‐analysis

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Abstract

Objective

To evaluate the effectiveness of low-dosed outpatient biopsychosocial interventions versus active physical interventions on pain intensity and disability in adults with nonspecific chronic low back pain.

Introduction

Research has shown that primary care biopsychosocial interventions (PCBI) can reduce pain intensity and disability. While scattered studies support low-dosed (<= 15 treatment hours) PCBI, no systematic review exists comparing the effectiveness of low-dosed PCBI treatment with traditional physical activity interventions in adults with nonspecific chronic low back pain (CLBP).

Inclusion Criteria

Randomised controlled trials that evaluate low-dosed PCBI compared to physical treatment with an active component such as exercise, physical activity or usual physiotherapy treatment for adult participants (18 years or older), who suffer from CLBP were included. Not recommended interventions that feature only passive therapies, spinal surgery, or pharmacological treatment, and studies with inpatient multidisciplinary-based rehabilitation (MBR) were excluded.

Methods

Databases were searched from inception to December 31, 2021. Language was restricted to English or German. Keywords and derivatives of "chronic back pain", "exercise intervention", "cognitive-behavioral therapy", "primary care" and "randomized controlled trials" were used. Sources were CINAHL, Cochrane Central Register of Controlled Trials (CENTRAL), Ovid Medline, Physiotherapy Evidence Database (PEDro), PubMed and Web of Science. Search was finished on March 08, 2022. Data appraisal, extraction, and synthesis followed JBI guidance for systematic reviews of effectiveness. Risk of Bias was assessed using JBI 13-item checklist for randomised controlled trials. The GRADE approach for grading the certainty of evidence was followed.

Systematic review registration number

PROSPERO 2022 CRD42022302771

Results

Eighteen RCTs were found eligible and 15 trials comprising a total of 1531 participants suffering from CLBP were entered in the meta-analyses. Risk of Bias was low. Overall evidence was moderate. Significant effects in favour of PCBI were found for pain intensity post-treatment (standardized mean difference (SMD) = - 1.09,  95% confidence interval (CI) = - 1.84 to - 0.34, I2 = 97%, P = 0.004) as well as at short-term (SMD = - 0.23,  95% CI = - 0.39 to -0.08, I2 = 0%, P = 0.004), long-term (SMD = - 0.79,  95% CI = - 1.42 to - 0.17, I2 = 96%, P = 0.01) and very long-term (SMD = - 1.13,  95% CI = - 1.93 to - 0.33, I2 = 94%, P = 0.005) follow-up. Significant effects in favour of PCBI for physical function were found post-treatment (SMD = - 1.33,  95% CI = - 2.17 to - 0.49, I2 = 97%, P = 0.002) at short-term (SMD = - 0.20, 95% CI = - 0.36 to - 0.04, I2 =  ;0%, P = 0.01), and at long-term follow-up (SMD = - 1.17, 95% CI = - 2.06 to - 0.28, I2 = 98%, P = 0.01). The results were characterised by high heterogeneity due to different types (cognitive behavioural therapy, pain-neuroscience education, mindfulness, motivation), delivery modes (individual and/or group), durations (3 to 12 weeks) and contact times (2 to 15 hours) of PCBI. In sensitivity analysis outliers were removed to reduce heterogeneity. The results remained significant for pain intensity at short-term (SMD = - 0.23,  95% CI = - 0.39 to - 0.08, I2 = 0%, P = 0.004), and long-term follow-up (SMD = - 0.22,  95% CI = - 0.41 to - 0.03, I2 = 39%, P = 0.02).

Conclusions

This meta-analysis suggests that low-dosed PCBI has favourable effects in terms of disability and pain intensity compared to active physical treatments alone. All conducted meta-analyses indicate that biopsychosocial interventions produce better outcomes than active physical treatment alone. Therefore, we strongly recommend decision makers and clinical practitioners to analyse how psychosocial elements can be introduced into outpatient (low-dosed) CLBP interventions.

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