Table I.

Univariate analysis of the relationship between successful clinical drainage and patient characteristics.

	Bilirubin, n (%)
Features	≥20% decrease	Increase or minor change	P-value
Age, years
>70	19 (67.9)	9 (32.1)	0.295
≤70	59 (79.7)	15 (20.3)
Gender
Male	46 (69.7)	20 (30.3)	0.052
Female	32 (88.9)	4 (11.1)
Obstruction level
Hilar	13 (72.2)	5 (27.8)	0.760
Non-hilar	65 (77.4)	19 (22.6)
Liver metastases
Present	24 (70.6)	10 (29.4)	0.033
Absent	54 (79.4)	14 (20.6)
Bilirubin prior to PTBD, μmol/l
>342	26 (81.2)	6 (18.8)	0.616
≤342	52 (76.5)	18 (23.5)

PTBD, percutaneous transhepatic biliary drainage.