Table 1.

Comparison of patient characteristics between the esophagogastroduodenoscopy and colonoscopy groups

	EGDS group (n = 17)	CS group (n = 27)	P value
Age (yr, mean ± SD)	75.2 ± 13.0	75.7 ± 13.0	0.88
Sex, male/female	15/2	22/5	0.69
Period after B-II reconstruction (yr, mean ± SD)	36.8 ± 13.8	36.8 ± 13.8	1.0
Diseases treated with B-II reconstruction
Gastric ulcer, n	10	11
Duodenal ulcer, n	3	9
Gastric cancer, n	2	4
Pyloric stenosis, n	1	1
Gastric ptosis, n	1	1
Unknown, n		1
Untreated papilla of Vater, n (%)	15 (88.2)	27 (100)	0.14
Antithrombotic drugs, n (%)	2 (11.8)	5 (18.5)	0.69
Periampullary diverticulum, n (%)	1 (5.9)	3 (11.1)	1.0
Disease, n
Bile duct stone	11	20	0.52
Others	6	7
Biliary ductal cancer	3	2
Pancreatic cancer	1	3
Chronic pancreatitis	1	1
Benign biliary stricture	1	1
Transverse diameter of the largest stone (mm, mean ± SD)	10.2 ± 4.8	12.2 ± 3.8	0.24
Number of stones [n, median (range)]	4 (1 - 30)	2 (1 - 6)	0.18

EGDS: Esophagogastroduodenoscopy; CS: Colonoscopy; B-II: Billroth II.