Endoscopic papillary large balloon dilation vs endoscopic sphincterotomy for retrieval of common bile duct stones: A meta-analysis

Table 1 Baseline characteristics of the included studies

Ref.	Sex (male/female)		Intervention	Mean diameter of stones (mm)		Mean number of CBD stones		Balloon size (mm) in EPLBD	Extent of sphincterotomy in EPLBD
	Group 1	Group 2		Group 1	Group 2	Group 1	Group 2
Qian et al[25], 2013	32/31	36/33	Group 1 small EST plus EPLBD (n = 63)	20.6 ± 5.4	20.3 ± 5.3	2.2 ± 1.2	2.3 ± 1.3	12-20	Limited to one-third that in the minor EST group
			Group 2 conventional EST (n = 69)
Teoh et al[26], 2012	32/41	40/38	Group 1 limited EST plus EPLBD (n = 73)	12.47	13.26	≥ 1	≥ 1	≤ 15	One third to one half of the size of papilla
			Group 2 complete EST (n = 78)
Oh et al[16], 2012	20/20	23/20	Group 1 EPLBD alone (n = 40)	13.2 ± 3.6	13.1 ± 3.9	NA	NA	10-18	No precut
			Group 2 EST (n = 43)
Kim et al[15], 2009	NA	NA	Group 1 small EST plus ELPBD (n = 27)	20.8 ± 4.1	21.3 ± 5.2	2.2 ± 1.3	2.3 ± 1.2	15-18	Mid-portion of papilla
			Group 2 EST alone (n = 28)
Heo et al[14], 2007	48/52	50/50	Group 1 EST plus EPLBD (n = 100)	16.0 ± 0.7	15.0 ± 0.7	2.7 ± 2.7	2.2 ± 1.9	12-20	A third of the size of EST group
			Group 2 EST alone (n = 100)

EPLBD: Endoscopic papillary large balloon dilation; EST: Endoscopic sphincterotomy; CBD: Common bile duct; NA: Not available.