Role of self-expanding metal stents in patients with malignant colorectal obstruction: A systematic review and meta-analysis

Figure 1 Study selection process. SEMS: Self-expandable metal stent.

Figure 2 Summary of risk and bias along with overall quality assessments of included studies.

Figure 3 Forest plot for technical success (A) and clinical success (B) after endoscopic placement of self-expandable metal stent for malignant colorectal obstruction. The size of the each square is proportional to the sample size for each study, and the horizontal lines through the squares indicated the 95%CI for that study. For the pooled analysis, the diamond indicated the pooled value and the right and left ends of the vertical dashed bar indicated the 95%CI for the analysis.

Figure 4 Forest plot for overall complication rate (A), stent occlusion rate (B), stent migration rate (C), and perforation rate (D) after endoscopic placement of self-expandable metal stent for malignant colorectal obstruction. The size of the each square is proportional to the sample size for each study, and the horizontal lines through the squares indicated the 95%CI for that study. For the pooled analysis, the diamond indicated the pooled value and the right and left ends of the vertical dashed bar indicated the 95%CI for the analysis.

Figure 5 Forest plot for overall re-intervention rate (A), surgical intervention rate (B), endoscopic re-stent rate (C), and other endoscopic intervention rate (D) after endoscopic placement of self-expandable metal stent for malignant colorectal obstruction. The size of the each square is proportional to the sample size for each study, and the horizontal lines through the squares indicated the 95%CI for that study. For the pooled analysis, the diamond indicated the pooled value and the right and left ends of the vertical dashed bar indicated the 95%CI for the analysis.

Figure 6 Funnel plots to depict publication bias with respect to technical success (A) and clinical success (B).