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Identification of subgroup effect with an individual participant data meta-analysis of randomised controlled trials of three different types of therapist-delivered care in low back pain
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Hee, Siew Wan, Mistry, Dipesh, Friede, Tim, Lamb, Sarah E., Stallard, Nigel, Underwood, Martin and Patel, Shilpa (2021) Identification of subgroup effect with an individual participant data meta-analysis of randomised controlled trials of three different types of therapist-delivered care in low back pain. BMC Musculoskeletal Disorders, 22 (1). 191. doi:10.1186/s12891-021-04028-8
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WRAP-identification-subgroup-effect-individual-participant-data-meta-analysis-Underwood-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (900Kb) | Preview |
Official URL: http://dx.doi.org/10.1186/s12891-021-04028-8
Abstract
Background:
Proven treatments for low back pain, at best, only provide modest overall benefits. Matching people to treatments that are likely to be most effective for them may improve clinical outcomes and makes better use of health care resources.
Methods:
We conducted an individual participant data meta-analysis of randomised controlled trials of three types of therapist delivered interventions for low back pain (active physical, passive physical and psychological treatments). We applied two statistical methods (recursive partitioning and adaptive risk group refinement) to identify potential subgroups who might gain greater benefits from different treatments from our individual participant data meta-analysis.
Results:
We pooled data from 19 randomised controlled trials, totalling 9328 participants. There were 5349 (57%) females with similar ratios of females in control and intervention arms. The average age was 49 years (standard deviation, SD, 14).
Participants: with greater psychological distress and physical disability gained most benefit in improving on the mental component scale (MCS) of SF-12/36 from passive physical treatment than non-active usual care (treatment effects, 4.3; 95% confidence interval, CI, 3.39 to 5.15). Recursive partitioning method found that participants with worse disability at baseline gained most benefit in improving the disability (Roland Morris Disability Questionnaire) outcome from psychological treatment than non-active usual care (treatment effects, 1.7; 95% CI, 1.1 to 2.31). Adaptive risk group refinement did not find any subgroup that would gain much treatment effect between psychological and non-active usual care. Neither statistical method identified any subgroups who would gain an additional benefit from active physical treatment compared to non-active usual care.
Conclusions:
Our methodological approaches worked well and may have applicability in other clinical areas. Passive physical treatments were most likely to help people who were younger with higher levels of disability and low levels of psychological distress. Psychological treatments were more likely to help those with severe disability. Despite this, the clinical importance of identifying these subgroups is limited. The sizes of sub-groups more likely to benefit and the additional effect sizes observed are small. Our analyses provide no evidence to support the use of sub-grouping for people with low back pain.
| Item Type: | Journal Article | ||||||
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| Subjects: | R Medicine > RD Surgery | ||||||
| Divisions: | Faculty of Medicine > Warwick Medical School > Health Sciences > Clinical Trials Unit Faculty of Medicine > Warwick Medical School > Health Sciences Faculty of Medicine > Warwick Medical School > Health Sciences > Statistics and Epidemiology Faculty of Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Backache , Backache -- Exercise therapy , Backache -- Physical therapy, Backache -- Treatment | ||||||
| Journal or Publication Title: | BMC Musculoskeletal Disorders | ||||||
| Publisher: | Biomed central | ||||||
| ISSN: | 1471-2474 | ||||||
| Official Date: | 16 February 2021 | ||||||
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| Volume: | 22 | ||||||
| Number: | 1 | ||||||
| Article Number: | 191 | ||||||
| DOI: | 10.1186/s12891-021-04028-8 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access | ||||||
| RIOXX Funder/Project Grant: |
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