Optimization of biliary drainage in inoperable distal malignant strictures

Figure 2 Kaplan Meier survival curve of stent patency with different types of stents. There is statistical significance regarding stent patency survival among the three types of stents, P value 0.000002 and log rank (Mantel-Cox) test 28.86, with median duration of stent patency of 170 d in HCMS stent type, 105 d in FCMS stent type and 90 d in UMS stent type. HCMS: Half covered metal stent; FCMS: Fully covered metal stent; UCMS: Uncovered metal stent.