Table 4.
Adverse events n (%)
| Overall (n = 1281) | UCSEMS (n = 970) | PCSEMS (n = 311) | P value1 | |
| Stent dysfunction | 251 (19.6) | 185 (19.1) | 66 (21.2) | 0.412 |
| Re-obstruction by tumor growth | 161 (12.6) | 145 (14.9) | 16 (5.1) | < 0.001 |
| Stent migration | 55 (4.3) | 21 (2.2) | 34 (10.9) | < 0.001 |
| Stent compression by tumor pressure | 9 (0.7) | 3 (0.3) | 6 (1.9) | 0.008 |
| Stent fracture | 7 (0.5) | 3 (0.3) | 4 (1.3) | 0.064 |
| Insufficient expansion | 11 (0.9) | 8 (0.8) | 3 (1.0) | 0.734 |
| Food occlusion | 9 (0.7) | 6 (0.6) | 3 (1.0) | 0.460 |
| Other | 2 (0.2) | 2 (0.2) | 0 | - |
| Perforation | 15 (1.2) | 12 (1.2) | 3 (1.0) | 1.000 |
| Bleeding | 52 (4.1) | 25 (2.6) | 27 (8.7) | < 0.001 |
| Major bleeding requiring intervention | 10 (0.8) | 9 (0.9) | 1 (0.3) | 0.466 |
1
Comparison of UCSEMS and PCSEMS using Fisher’s exact test. UCSEMS: Uncovered self-expandable metal stents; PCSEMS: Partially covered self-expandable metal stents.