Factors Associated with the Technical Success of Bilateral Endoscopic Metallic Stenting with Partial Stent-In-Stent Placement in Patients with Malignant Hilar Biliary Obstruction

Table 5

Outcomes of the two groups.

	All participants,			Matched pairs,
	Used delivery system of SEMS			Used delivery system of SEMS
	<6.0 Fr	≥6.0 Fr	value	<6.0 Fr	≥6.0 Fr	value
Procedure time, min (range)
Total procedure time of ERCP	54.3 (20-132)	81.0 (35-177)	0.004	54.3 (20-132)	86.7 (35-149)	0.009
Stenting time	12.8 (3-23)	22.0 (7-124)	0.003	12.8 (3-23)	26.6 (7-84)	0.009
Use of dilation devices, (%)	14 (82)	13 (68)	0.283	14 (82)	11 (65)	0.219
Clinical response, effective, (%)	15 (88)	19 (100)	0.216	15 (88)	17 (100)	0.242
Complication, (%)	4 (24)	5 (26)	0.577	4 (24)	4 (24)	0.656

SEMS: self-expandable metallic stent; ERCP: endoscopic retrograde cholangiopancreatography.