Table 2.

Univariable and multivariable analyses of reinterventions.

(2a) IS
Variable	Reintervention		P value
	With (n = 7)	Without (n = 44)	Univariate	Multivariate
Bismuth-Corlette classification, n (%)			0.187	0.309
I/II	0 (0.0)	9 (20.4)
III/IV	7 (100.0)	35 (79.6)
Previous endoscopic sphincterotomy, n (%)			0.355
With	4 (57.1)	17 (38.6)
Without	3 (42.9)	27 (61.4)
Stenosis length over 20 mm, n (%)			0.402
With	5 (71.4)	24 (54.5)
Without	2 (28.6)	20 (45.5)
Obstruction of the bile duct branch, n (%)			0.250
With	6 (85.7)	28 (63.6)
Without	1 (14.3)	16 (36.4)
Distance of over 10 mm from stenosis to the first branch, n (%)			0.401
With	1 (14.3)	13 (29.5)
Without	6 (85.7)	31 (70.5)
(2b) FCSEMS
Variable	Reintervention		P value
	With (n = 3)	Without (n = 32)	Univariate	Multivariate
Bismuth-Corlette classification, n (%)			0.002	0.068
I/II	0 (0.0)	26 (81.2)
III/IV	3 (100.0)	6 (18.8)
Previous endoscopic sphincterotomy, n (%)			0.581
With	2 (66.7)	16 (50.0)
Without	1 (33.3)	16 (50.0)
Stenosis length over 20 mm, n (%)			0.805
With	2 (66.7)	19 (59.4)
Without	1 (33.3)	13 (40.6)
Obstruction of the bile duct branch, n (%)			<0.001	0.008; HR 29.8, 95%CI 2.5–350.1
With	2 (66.7)	1 (3.1)
Without	1 (33.3)	31 (96.9)
Distance of over 10 mm from stenosis to the first branch, n (%)			0.027	0.127
With	0 (0.0)	21 (65.6)
Without	3 (100.0)	11 (34.4)

IS, inside stent; FCSEMS, fully covered self-expandable metallic stent.