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  • Title: Quality Assessment and Risk of Bias of Systematic Reviews of Prophylactic Mesh for Parastomal Hernia Prevention Using AMSTAR and ROBIS Tools.
    Author: García-Alamino JM, López-Cano M, Kroese L, Helgstrand F, Muysoms F.
    Journal: World J Surg; 2019 Dec; 43(12):3003-3012. PubMed ID: 31440779.
    Abstract:
    BACKGROUND: Systematic reviews play a crucial role in clinical decision making and resource allocation and are expected to be unbiased and consistent. The aim of this study is a review of systematic reviews on the use of prophylactic mesh to prevent parastomal hernia (PH) formation using ROBIS and AMSTAR tools to assess the risk of bias and methodological quality. METHODS: We included systematic reviews with or without meta-analysis of which the objective was to assess the use of a prophylactic mesh to prevent PH. A systematic search of the literature in five databases from inception until December 2017 was conducted. For each systematic review, methodologic quality and risk of bias were assessed using the AMSTAR and ROBIS tools, respectively. We estimated the inter-rater reliability for individual domains and for the overall methodological quality and risk of bias using Fleiss' k. RESULTS: We identified 14 systematic reviews that met the inclusion criteria. Using the AMSTAR scale with a cutoff value, six reviews showed high methodologic quality and eight were of low quality. Using the ROBIS tool, the overall risk of bias was low in 50% of the reviews analyzed. In the remaining studies, the risk of bias was unclear. CONCLUSIONS: The global evidence in favor of the use of a prophylactic mesh for preventing PH is not uniform regarding quality and risk of bias. Surgeons cannot be equally confident in the results of all systematic reviews published on this topic.
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