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Mesh can be used to prevent incisional hernia (IH) occurrence. However, the effect of various mesh positions has never been compared. This study aimed to compare and rank the effect and safety of various mesh-augmented fascia closure techniques on hernia prophylaxis in midline laparotomy.

MEDLINE and SCOPUS were searched from inception to December 2019. Randomized clinical trials (RCTs) were eligible if they met the following criteria: comparison of any of the following interventions: onlay (OM), retrorectus (RM), preperitoneal (PM), intraperitoneal mesh (IM) augmentation, and primary suture closure (PSC); and reporting on any of these outcomes: IH, wound infection, seroma, hematoma, and dehiscence. Two independent reviewers extracted data and assessed the risk of bias. A two-stage random-effect network meta-analysis was performed, then intervention effects were pooled …