Meta-analysis comparison of endoscopic papillary balloon dilatation and endoscopic sphincteropapillotomy

Table 1 Overview of study characteristics (mean ± SD)

Ref.	Year	Country	Treatment	Case	Sex	Age (yr)	MFT (mo)	Diameter of stones (mm)	No. of stones	Jadad grade
Minami et al[4]	1995	Japan	EPBD	20	13/7	64.0 ± 11.2	21.5 ± 6.2	< 12	No data	4 score
			EST	20	9/11	71.3 ± 14.0	23.1 ± 5.0	< 12
Bergman et al[5]	1997	Holland	EPBD	101	43/58	72.0 ± 11.8	6.2	10.0 ± 5.5	2.0 ± 2.2	6 score
			EST	101	45/56	71.0 ± 11.1	6.1	9.0 ± 3.5	1.0 ± 2.3
Ochi et al[6]	1999	Japan	EPBD	55	34/21	62.6 ± 15.9	23.0 ± 6.3	8.1 ± 3.4	2.1 ± 1.9	4 score
			EST	55	31/24	66.3 ± 14.3	23.0 ± 6.3	8.8 ± 4.2	1.7 ± 1.2
Arnold et al[7]	2001	Germany	EPBD	30	11/19	54.2 ± 18.5	No data	7.0 ± 3.5	1.6 ± 1.1	4 score
			EST	30	13/17	58.5 ± 18.5		10.0 ± 4.7	1.8 ± 1.5
Yasuda et al[8]	2001	Japan	EPBD	35	19/16	69.5 ± 7.3	No data	12.4 ± 3.3	3.7 ± 2.5	4 score
			EST	35	14/21	69.4 ± 7.5		12.3 ± 3.2	3.3 ± 2.5
Bergman et al[9]	2001	Holland	EPBD	16	12/4	73.0 ± 6.8	No data	9.0 ± 2.8	2.0 ± 1.5	6 score
			EST	18	18/0	72.0 ± 2.8		8.0 ± 2.0	2.0 ± 1.5
Natusi et al[10]	2002	Japan	EPBD	70	33/37	64.5 ± 10.6	No data	9.2 ± 3.2	2.7 ± 2.3	4 score
			EST	70	33/37	67.1 ± 8.3		9.7 ± 2.3	2.6 ± 2.3
Fujita et al[11]	2003	Japan	EPBD	138	75/63	66.8 ± 1.3	No data	7.0 ± 3.1	2.4 ± 2.5	5 score
			EST	144	92/52	61.9 ± 1.2		7.7 ± 3.4	2.4 ± 2.9
Vlaviano et al[12]	2003	England	EPBD	103	25/78	60.8 ± 1.3	No data	No data	No data	4 score
			EST	99	35/64	62.0 ± 1.2
Disario et al[2]	2004	United States	EPBD	117	76/41	47.0 ± 19.0	1.6 ± 2.9	6.0 ± 1.6	1.0 ± 16.5	6 score
			EST	120	89/31	54.0 ± 19.0	1.6 ± 0.4	5.0 ± 2.3	1.0 ± 1.5
Lin et al[13]	2004	Taiwan (China)	EPBD	51	28/23	64.0 ± 10.3	16.0 ± 3.0	8 ± 6	No data	4 score
			EST	53	31/22	65.0 ± 10.0	16.0 ± 3.0	8 ± 6
Tanaka et al[14]	2004	Japan	EPBD	16	10/6	67.2 ± 4.7	No data	10.2 ± 3.5	2.0 ± 1.8	5 score
			EST	16	3/13	70.6 ± 6.3		12.4 ± 6.0	2.0 ± 0.5
Watanabe et al[15]	2007	Japan	EPBD	90	51/39	69.1 ± 13.1	No data	8.1 ± 3.2	2.7 ± 2.8	4 score
			EST	90	49/41	70.2 ± 8.1		7.7 ± 2.3	2.5 ± 2.7
Yasuda et al[16]	2010	Japan	EPBD	138	52/92	68.5 ± 11.2	80.3 ± 15.0	6.5 ± 2.1	1.0 ± 2.5	5 score
			EST	144	63/75	71.0 ± 10.3	81.6 ± 15.2	7.0 ± 2.3	1.0 ± 3.8

M: Male; F: Female; MFT: Mean follow-up time; MD: Mean diameter; EPBD: Endoscopic papillary balloon dilatation; EST: Endoscopic sphincteropapillotomy.