Table 1. Clinical features according to the type of drainage catheter (including all 371 patients).

	c-ENBD (7-Fr)	m-ENBD (6-Fr)
Variables	(n = 242)	(n = 129)	P value
Age, y (range)			0.756
	69 (34 – 83)	68 (35 – 90)
Gender (%)			0.100
Male	148 (61.2)	90 (69.8)
Female	94 (38.8)	39 (30.2)
Bismuth-Corlette criteria, n (%)			0.040
I, II	50 (20.7)	39 (28.1)
III, IV	192 (79.3)	90 (69.8)
Pre-ENBD cholangitis (%)			0.512
With	34 (14.0)	15 (11.6)
Without	208 (86.0)	114 (88.4)
Pre-ENBD total serum bilirubin (%)			0.926
≥ 2 mg/dL	95 (39.3)	50 (38.8)
< 2 mg/dL	147 (60.7)	79 (61.2)
Previous EBS (%)			0.356
With	102 (42.1)	48 (37.2)
Without	140 (57.9)	81 (62.8)
Previous ENBD (%)			0.863
With	43 (17.8)	22 (17.1)
Without	199 (82.2)	107 (82.9)
Previous EST (%)			0.570
With	84 (34.7)	41 (31.8)
Without	158 (65.3)	88 (68.2)
Pancreatography (%)			0.029
Present	91 (37.6)	34 (26.4)
Absent	151 (62.4)	95 (73.6)
Duration of ENBD, d (range)			0.039
	29 (2 – 96)	33 (3 – 144)
Catheter dislocation (%)			0.073
Occurred	6 (2.5)	8 (6.2)
Not occurred	236 (97.5)	121 (93.8)
Catheter impaction (%)			0.071
Occurred	19 (7.9)	4 (3.1)
Not occurred	223 (92.1)	125 (96.9)
Subsequent and/or additional drainage			0.123
Required	58 (24.0)	22 (17.1)
Not required	184 (76.0)	107 (82.9)
Post-ENBD cholangitis (%)			0.006
With	59 (24.4)	16 (12.4)
Without	183 (75.6)	113 (87.6)
Post-ENBD pancreatitis (%)			0.968
With	39 (16.1)	21 (16.3)
Without	203 (83.9)	108 (83.7)

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