Clinical and pathological features of advanced rectal cancer with submesenteric root lymph node metastasis: Meta-analysis

Figure 1 Document retrieval flow chart. ¹Consider, if feasible to do so, reporting the number of records identified from each database or register searched (rather than the total number across all databases/registers). ²If automation tools were used, indicate how many records were excluded by a human and how many were excluded by automation tools.

Figure 2 Meta-analysis. A: Meta-analysis of gender as a risk factor; B: Meta-analysis of age as a risk factor; C: Meta-analysis of preoperative carcinoembryonic antigen level as a risk factor; D: Meta-analysis of tumor location as a risk factor; E: Meta-analysis of tumor size as a risk factor; F: Meta-analysis of pathological types as risk factors; G: Meta-analysis of tumor differentiation degree as a risk factor; H: Meta-analysis of T stage as a risk factor. CI: Confidence interval; CEA: Carcinoembryonic antigen.

Figure 3 A biased funnel plot analysis. A: Biased funnel plot of gender as a risk factor; B: Biased funnel plot of age as a risk factor. OR: Odds ratio.