Table 5. Clinical features according to type of drainage catheter after propensity score matching (including 118 patients in each group).

	c-ENBD (7-Fr)	m-ENBD (6-Fr)
Variables	(n = 118)	(n = 118)	P
Age, y (range)			0.773
	69 (45 – 83)	69.5 (35 – 90)
Gender (%)			1.000
Male	81 (68.6)	81 (68.6)
Female	37 (31.4)	37 (31.4)
Bismuth-Corlette criteria, n (%)			1.000
I, II	31 (26.3)	31 (26.3)
III, IV	87 (73.7)	87 (73.7)
Pre-ENBD cholangitis (%)			1.000
With	10 (8.5)	10 (8.5)
Without	108 (91.5)	108 (91.5)
Pre-ENBD total serum bilirubin (%)			0.894
≥ 2 mg/dL	47 (39.8)	41 (34.7)
< 2 mg/dL	71 (60.2)	77 (65.3)
Previous EBS (%)			0.684
With	44 (37.3)	41 (34.7)
Without	74 (62.7)	77 (65.3)
Previous ENBD (%)			0.717
With	17 (14.4)	19 (16.1)
Without	101 (85.6)	99 (83.9)
Previous EST (%)			1.000
With	34 (28.8)	34 (28.8)
Without	84 (71.2)	84 (71.2)
Pancreatography (%)			1.000
Present	33 (28.0)	33 (28.0)
Absent	85 (72.0)	85 (72.0)
Duration of ENBD, d (range)			0.183
	29 (2 – 95)	33 (3 – 144)
Catheter dislocation (%)			0.308
Occurred	3 (2.5)	6 (5.1)
Not occurred	115 (97.5)	112 (94.9)
Catheter impaction (%)			0.098
Occurred	10 (8.5)	4 (3.4)
Not occurred	108 (91.5)	114 (96.6)
Subsequent and/or additional drainage (%)			0.030
Required	34 (28.8)	20 (16.9)
Not required	84 (71.2)	98 (83.1)
Post-ENBD cholangitis (%)			0.007
With	30 (25.4)	14 (11.9)
Without	88 (74.6)	104 (88.1)
Post-ENBD pancreatitis (%)			1.000
With	19 (16.1)	19 (16.1)
Without	99 (83.9)	99 (83.9)

ENBD, endoscopic nasobiliary drainage; c-ENBD, conventional ENBD catheter; m-ENBD, modified ENBD catheter; EBS, endoscopic biliary stenting; EST, endoscopic sphincterotomy