Figure 4From: Covered versus uncovered self-expandable metallic stents for palliation of malignant gastric outlet obstruction: a systematic review and meta-analysis Complications and reintervention between covered and uncovered metal stents group. Meta-analysis showed there was no significant difference in overall complications (c). However, covered stents were associated with higher stent migration (a) and less restenosis (b) compared to uncovered stents. There was no significant difference in reintervention rate between two groups (d).Back to article page