Endoscopic papillary balloon intermittent dilatation and endoscopic sphincterotomy for bile duct stones

Table 4 Clinical factors and success rate of stone removal

Factor	Sample size	Success	Sample size	Failure	OR	P value
Age (yr)	169	60.30 ± 16.62	37	64.60 ± 12.81	1.31	0.14
Sex					1.59	0.21
Male	83	49.11%	14	37.84%
Female	86	50.89%	23	62.16%
Papilla diverticulum					2.25	0.03
Yes	36	21.30%	14	37.84%
No	133	78.70%	23	62.16%
Papilla pre-cut					0.91	0.93
No	164	97.04%	36	97.30%
Yes	5	2.96%	1	2.70%
Performance of pancreatography					0.50	0.18
Yes	15	8.88%	6	16.22%
No	154	91.12%	31	83.78%
Stone removal method					3.90	0.00
EPBD	94	55.62%	9	24.32%
EST	75	44.38%	28	75.68%
Common bile duct diameter	169	12.38 ± 2.49	37	13.86 ± 4.21	3.26	0.00
Common bile duct stone number	169	2.02 ± 1.43	37	2.08 ± 1.32	1.65	0.82
Maximum transverse diameter of stone	169	7.81 ± 2.53	37	9.11 ± 2.28	2.08	0.00

EPBID: Endoscopic papillary balloon intermittent dilatation; EST: Endoscopic sphincterotomy; OR: Odds ratio.