Limited endoscopic sphincterotomy plus large balloon dilation for choledocholithiasis with periampullary diverticula

Table 1 Baseline characteristics of patients with common bile duct stones who also had periampullary diverticula (periampullary diverticula group) or did not have periampullary diverticula (control group), median (range)

Characteristics	PAD group	PAD subtypes			Control group	P2value
		Type A	Type B	P1 value
No. of patients	73	35 (47.9)	38 (52.1)		66
M:F	36:37	19:16	17:21	NS	39:27	NS
Age (yr)	70 (40-89)	74 (54-88)	66.5 (40-89)	NS	64 (23-89)	< 0.001
CBD diameter (mm)	15 (10-30)	16 (10-26)	15 (10-30)	NS	15 (11-38)	NS
Size of stones (mm)	14 (10-33)	14 (10-30)	14 (10-33)	NS	12 (10-35)	NS
No. of stones	2 (1-20)	2 (1-9)	2 (1-20)	NS	2 (1-7)	NS
Distal CBD stricture	4	3	1	NS	1	NS
Needle-knife fistulotomy	7	3	4	NS	11	NS

¹Comparing between subgroups of periampullary diverticula (PAD); ²Comparing PAD group with control group. CBD: Common bile duct; NS: Not significant.