TABLE 3b.

The stent patency periods and 1‐year stent dysfunction rates in all endoscopic biliary stenting (EBS).

	Total	IS	PS
	n = 216	n = 89	n = 127	p‐value
Median period of stent patency, days	239	356	196	0.009
Stent dysfunction factor
Cases of stent occlusion within a year, n (%)		41 (46%)	58 (46%)
One‐year stent occlusion rate, %		49%	58%	0.66
Cases of acute cholangitis within a year, n (%)		12 (13%)	21 (17%)
One‐year acute cholangitis rate, %		17%	21%	0.29
Cases of stent dislocation within a year, n (%)		2 (2%)	30 (24%)
One‐year stent dislocation rate		4%	34%	< 0.001

Abbreviations: IS, inside stent; PS, plastic stent.

The median periods of stent patency and 1‐year stent dysfunction rates were analyzed using the Kaplan‐Meier method (the log‐rank test).