Biliary drainage strategy of unresectable malignant hilar strictures by computed tomography volumetry

Table 4 Predictors of drainage-associated cholangitis by univariate analysis n (%)

	Cholangitis	Non-cholangitis	P value
	n = 9	n = 69
Age (yr), mean ± SD	76.9 ± 8.3	74.5 ± 10.5	0.51
Gender, male/female	5/4	48/21	0.46
Etiology, cholangiocarcinoma	6 (66.7)	44 (63.8)	1.00
Bismuth type IV)	6 (66.7)	30 (43.5)	0.29
Total bilirubin (mg/dL)	8.3 ± 3.5	10.6 ± 6.1	0.12
Impaired liver function	2 (22.2)	7 (10.1)	0.66
Drainage method, endoscopic drainage	7 (77.8)	63 (91.3)	0.23
Type of stent, metal stent	1 (11.1)	10 (14.5)	1.00
Drainage areas
Unilateral/bilateral	9/0	63/6	1.00
Drained liver volume (%), mean ± SD	29.3 ± 4.4	46.6 ± 18.9	< 0.01