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. 2020 Jul 25;20:167. doi: 10.1186/s12893-020-00824-6

Fig. 4.

Fig. 4

Forest plots of the meta-analysis for complications. a: Overall complications were compared between the LS and OS groups. b: Severe (Clavien-Dindo grade ≥ 2) complications were compared between the LS and OS groups. c: The number of postoperative hypotension cases was compared between the LS and OS groups. d: The number of postoperative CVDs was compared between the LS and OS groups. CVD: cardiovascular disease; LS: laparoscopic surgery; OS: open surgery; CI: confidence interval