Is endoscopic papillary large balloon dilatation without endoscopic sphincterotomy effective?

Table 4 Waist disappearance vs waist non-disappearance

Variables	Waist disappearance(n = 30)	Waist non-disappearance(n = 11)	P value
Age (yr)	77.7 ± 10.8	77.5 ± 11.4	NS
Gender (M:F)	15:15	4:7	NS
Periampullary diverticulum	70% (21/30)	63.6% (7/11)	NS
Distal CBD diameter (mm)	13.0 ± 2.1	14.8 ± 2.9	NS
Distal CBD diameter/stone ratio	1.05 ± 0.13	1.00 ± 0.21	NS
Number of stones	2.8 ± 2.2	3.6 ± 2.7	NS
Procedure time (min)	43 ± 20	49 ± 24	NS
Sessions required for complete stone clearance	1.1 ± 0.86	1.3 ± 0.43	NS
Application of ML	13.3% (4/30)	9.1% (1/11)	NS
Acute pancreatitis	3.3% (1/30)	9.1% (1/11)	NS

NS: Not significant; CBD: Common bile duct; ML: Mechanical lithotripsy.