| | DLS (24) | New DLS (23) | UMS (17) |
| | Mean patency time | 74 ± 66 | 160 ± 136*1 | 196 ± 147*3 | | Stent malfunction | 16 | 15*2 | 7*3 | | (%) | (66.6) | (65.2) | (41.1) | | Ingrowth | 0 | 0 | 4 | | Overgrowth | 2 | 1 | 0 | | Sludge | 5 | 3 | 0 | | Food scraps | 2 | 4 | 1 | | Impaction (bile duct) | 3 | 3 | 0 | | Impaction (duodenal wall) | 3 | 1 | 1 | | Other | 1 | 3 | 1 | | Complication | 3 | 2*2 | 0*3 | | (%) | (12.5) | (8.7) | (0) | | Cholecystitis | 2 | 0 | 0 | | Pancreatitis | 1 | 0 | 0 | | Hemorrhage | 0 | 0 | 0 | | Migration | 0 | 1 | 0 | | Other | 0 | 1 | 0 |
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