Introduction: Through methodological quality assessment, this paper summarized the report quality and evidence level of systematic reviews (SRs)/meta-analyses (MAs) of acupuncture and its related treatment of female urinary incontinence (UI).
Evidence acquisition: We conducted a comprehensive search in four internationally recognized databases (PubMed, Embase, Web of Science, Cochrane Library) for SRs/MAs pertaining to the treatment of female UI using acupuncture and its related therapies. We evaluated the methodological quality of the SRs/MAs using the "Assessing the Methodological Quality of Systematic Reviews 2" (AMSTAR-2) tool, assessed the quality of evidence using the "Grading of Recommendations, Assessment, Development, and Evaluation" (GRADE) system, and evaluated the reporting quality of the SRs/MAs using the "Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020" (PRISMA-2020) guidelines. This overview is registered with PROSPERO, CRD42024557600.
Evidence synthesis: In the final selection of 7 SRs/MAs, a consistent finding of the superiority of acupuncture and related therapies in the treatment of female UI was observed. Methodological quality was classified according to AMSTAR-2, with three rated as "high," two as "moderate," and two as "low." The main sources of downgrading included the absence of funding sources, failure to provide a reasonable explanation for heterogeneity, and not reporting potential conflicts of interest. According to the GRADE system, the quality of evidence ranged from moderate to very low. The most common reason for downgrading the evidence quality was the repeated utilization of the same original randomized controlled trials. Some results were also downgraded due to inconsistency, imprecision, and potential publication bias. According to the PRISMA-2020 statement, most SR/MAs clearly presented their title information, and almost all of them correctly used meta-analysis methods. However, some of them lacked comprehensive analysis and discussion of bias risk and consistency of results and were deficient in terms of protocol registration and documentation.
Conclusions: Acupuncture and related therapies demonstrate superiority in terms of efficacy and safety for the treatment of female urinary incontinence (UI). The overall quality of the SRs/MAs seems to be satisfactory, particularly when compared to studies of acupuncture for the treatment of other conditions. However, attention should still be given to the proper use of methods and ensuring completeness in reporting.