| Uncovered | Partially covered | Fully covered |  | |||
---|---|---|---|---|---|---|---|
(n = 44) | (n = 28) | (n = 29) | P value | ||||
Recurrent biliary obstruction | 20 | (45.4%) | 8 | (28.6%) | 16 | (55.2%) | 0.122 |
 Tumor ingrowth | 11 | (25.0%) | 0 | 0 | <0.001* | ||
 Tumor overgrowth | 1 | (2.3%) | 1 | (3.6%) | 2 | (6.9%) | 0.61 |
 Sludge | 2 | (4.5%) | 3 | (10.7%) | 1 | (3.4%) | 0.489 |
 Stent migration | 0 | 0 | 9 | (31.0%) | <0.001* | ||
 Unknown | 6 | (13.6%) | 4 | (14.3%) | 4 | (13.8%) | 1.00 |