Efficacy of a newly developed dilator for endoscopic ultrasound-guided biliary drainage

Table 1 Patient characteristics and deployed stents

	Study group (n = 14)	Control group (n = 14)	P value
Age (yr), mean ± SD	74.6 ± 16.1	73.5 ± 9.3	0.82
Sex (male:female)	9:5	8:6	1.00
Etiology			0.28
Pancreatic cancer	8	12
Biliary cancer	3	1
Duodenal cancer	2	0
Metastatic lymph nodes	1	1
Deployed stent			0.041
Plastic stent	0	5
Metal stent	14	9

Table 2 Procedure time

	Study group (n = 14)	Control group (n = 14)	P value
Procedure time (min), mean ± SD	44 ± 26	27 ± 7	0.026
≤ 20	3	1
20-40	11	8
40-60	0	2
> 60	0	3

Table 3 Procedure-related complications

	Study group (n = 14)	Control group (n = 14)	P value
Overall	0	4 (29%)	NA
Localized peritonitis	0	3
Pan-peritonitis	0	1
Hemorrhage	0	0
Death	0	0

NA: Not applicable.