FIGURE 2.

Forest plot demonstrating the impact of 3D versus 2D vision for operative time and blood loss in minimally invasive abdominal surgery. (A) Forest plot demonstrating the significant impact of 3D vision for operative time (SMD = −0.22, P = 0.01) in subgroup bariatric (SMD = −0.74, P = 0.01)^29,36 and general surgery^{26,27,33,38,39,41,43,44,46} (SMD = −0.18, P = 0.04) and in several individual RCTs in upper GI^10,28,42,47 and colorectal surgeries.^34,40 Surgical procedure: ^aesophagectomy; ^bhiatal hernia repair; ^c(radical) gastrectomy; ^dspleen preserving splenic hilar lymphadenectomy; ^ecolorectal resection; ^ftotal mesorectal excision; ^ghemicolectomy; ^htotal colectomy; ⁱmini-gastric bypass; ^jRoux-en-Y gastric bypass; ^kcholecystectomy; ^lcholecystectomy and appendectomy; ^mtransabdominal preperitoneal inguinal hernia repair; ⁿappendectomy; ^odistal pancreatectomy. (B) Forest plot demonstrating the significant impact of 3D vision for estimated blood loss (SMD = −0.33, P = 0.06) in subgroup colorectal surgery⁴⁰ (SMD = −0.31, P = 0.09) and in several individual RCTs in upper GI surgery.^{30,32,37,42,47} Surgical procedure: ^aesophagectomy; ^b(radical) gastrectomy; ^cspleen preserving splenic hilar lymphadenectomy; ^dhemicolectomy; ^echolecystectomy; ^ftransabdominal preperitoneal inguinal hernia repair.