FIGURE 2.

Comparison of time to recurrent biliary obstruction between fully covered and uncovered self‐expandable metal stent groups. (a) Kaplan–Meier curves of time to recurrent biliary obstruction. In the Kaplan–Meier analysis, patients who died were censored. (b) Time to recurrent biliary obstruction was determined using propensity score‐adjusted competing‐risks regression. In the competing risk model for recurrent biliary obstruction rates, mortality was assigned as the competing risk. All variables listed in Table 1 were adjusted using propensity score analysis.