Endoscopic large-balloon dilation alone versus endoscopic sphincterotomy plus large-balloon dilation for the treatment of large bile duct stones

Table 3 Comparison of clinical characteristics between the success and failure groups

	LBD alone (n = 62)			EST plus LBD (n = 69)
	Success group (n = 50)^a	Failure group (n = 12)^b	Pvalue	Success group (n = 51)^a	Failure group (n = 18)^b	Pvalue
Bile duct stones
Size (mm)	14.6 ± 2.1	20.2 ± 3.5	<0.001	15.5 ± 2.9	19.4 ± 5.9	<0.001
Number	2.2 ± 1.7	2.9 ± 1.2	0.166	2.8 ± 1.8	3.0 ± 1.9	0.609
Balloon/stone diameter ratio	1.01 ± 0.10	0.82 ± 0.08	<0.001	1.15 ± 0.19	0.90 ± 0.18	<0.001

LBD: Large-balloon dilation; EST: Endoscopic sphincterotomy.
^a Complete stone clearance without mechanical lithotripsy.
^b Application of mechanical lithotripsy or failure to extract stone even after LBD.
Continuous variables are expressed as mean ± standard deviation.

ISSN: 1471-230X