Figure 4From: Influences of laparoscopic-assisted gastrectomy and open gastrectomy on serum interleukin-6 levels in patients with gastric cancer among Asian populations: a systematic reviewForest plots of subgroup analyses based on country and sample size. (A) Subgroup analyses based on country for the comparison of postoperative IL-6 levels (LAG group VS. OG group). (B) Subgroup analyses based on sample size for the comparison of postoperative IL-6 levels (LAG group VS. OG group). (C) Subgroup analyses based on country for the comparison of postoperative increased IL-6 levels (LAG group VS. OG group). (D) Subgroup analyses based on sample size for the comparison of postoperative increased IL-6 levels (LAG group VS. OG group).Back to article page