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Time to RBO for each stent after propensity score matching. The mean (SD) time to RBO was 37.9 (30.2) days in the IS group and 45.1 (35.1) days in the FCSEMS group, with no significant difference (P=0.912, log-rank test). RBO, recurrent biliary obstruction; IS, inside stent; FCSEMS, fully covered self-expandable metallic stent.
