Endoscopic papillary large balloon dilatation with sphincterotomy is safe and effective for biliary stone removal independent of timing and size of sphincterotomy

Table 4 Procedure characteristics by outcomes of common bile duct stone extraction n (%)

Variables	Group A (n = 166)	Group B (n = 63)	P value
Procedure time (min)	30.5 (9-160)	44 (12-90)	0.0010
Number of ERCP (median)	1 (1-3)	2 (1-10)	0.0001
Pre-cut sphincterotomy	6 (3.6)	2 (3.2)	0.8000
Previous Sphincterotomy	106 (63.9)	42 (66.7)	0.8000
Fresh Sphincterotomy	58 (35.5)	23 (36.5)	0.9800
Median Balloon size diameter	13 (10-18)	13.5 (10-18)	0.2200