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KMID : 1035420220100030037
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Journal of The Korean Society of Integrative Medicine
2022 Volume.10 No. 3 p.37 ~ p.52
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Effects of Electrical Stimulation on Patients with Non-Specific Low Back Pain : A Meta-Analysis of Domestic Database
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Lee Jeong-Woo
Cho Sung-Hyoun
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Abstract
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Purpose : The purpose of this meta-analysis was to evaluate the effects of electrical stimulation on patients with non-specific low back pain.
Methods : Domestic databases were gathered from studies that conducted clinical trials associated with electrical stimulation and its impact on pain of non-specific low back patients. A total of 681 studies were identified, with 12 studies satisfying the inclusion data. The studies consisted of patient, intervention, comparison, outcome, and study design (PICO-SD). The search outcomes were items associated with low back pain. Cochrane risk of bias 2 (RoB 2) was used to evaluate the quality of 12 randomized controlled trials. Effect sizes (Hedges’s g) in this study were computed as the corrected standard mean difference (SMD). A random-effect model was used to analyze the effect size because of the high heterogeneity among the studies. Egger’s regression and ‘trim-and-fill’ tests were carried out to analyze the publication bias. Cumulative meta-analysis and sensitivity analysis were conducted to analyze the effect according to the sample size and the consistency of the effect size.
Results : The following factors had a large overall effect size (Hedges’s g=1.28, 95 % CI=.20~2.36) involving electrical stimulation on non-specific low back pain. The subgroup analysis all showed a statistical difference in the types of study design, electrical stimulation, and assessment tool. No statistically significant difference was found in the meta-regression analysis. Publican bias was found in the data.
Conclusion : The findings in this study indicate that electrical stimulation interventions have a positive effect on patients with non-specific low back pain. However, due to the low quality of studies and publication bias, the results of our study should be interpreted cautiously.
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KEYWORD
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chronic low back pain, electrical stimulation, interferential current, meta-analysis, transcutaneous electrical stimulation
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