Efficacy of the New Double-Layer Stent for Unresectable Distal Malignant Biliary Obstruction: A Single-Center Retrospective Study

Table 1

Patient characteristics by stent type and laboratory values on admission.

	New DLS	DLS	UMS
Number	23	24	17
Gender (m/f)	16/7	19/5	9/8
Age	68.1 ± 12.8	70.9 ± 11.2^*1	72.1 ± 11.2^*2
Diagnosis
Pancreatic cancer
III	2	4	2
IVa	6	6	7
IVb	11	11	4
Biliary duct cancer	0	0	2
Other	4	3	2
Unresectable due to:
Advanced stage	21	20	13
Patient age	0	4	2
Other	2	0	2
Chemotherapy
+	16	11	8
−	7	13	9
T-Bil (mg/dL)	6.8 ± 5.6	5.2 ± 4.6^*1	6.6 ± 7.4^*2
ALP (IU/L)	1027 ± 515	1296 ± 890^*1	1094 ± 910^*2

^*1New DLS+ versus DLS n.s. ^*2New DLS versus UMS n.s.