Using cholecystokinin to facilitate endoscopic clearance of large common bile duct stones

Table 1 Baseline characteristics of the patients in the two groups n (%)

	CCK group(n = 74)	No CCK group(n = 74)	P value
Age (yr, mean ± SD)	67.5 ± 5.6	69.2 ± 6.3	0.542
Sex (male/female)	40/34	38/36	0.338
Bile duct stricture	32 (43.2)	30 (40.5)	0.292
Pre-cut sphincterotomy	39 (52.7)	40 (54.1)	0.451
Altered anatomy	21 (28.4)	19 (25.7)	0.319
Multiple stones	29 (39.2)	26 (35.1)	0.267
Stone size (mm), mean ± SD)	18.6 ± 2.4	17.2 ± 3.4	0.326
≥ 30 mm stone	11 (14.9)	12 (16.2)	0.195

Analysis of characteristics of patients enrolled in the study. Patient baseline characteristics include age, sex, bile duct stricture, pre-cut sphincterotomy, altered anatomy, multiple stones, stone size, and the presence of extremely large stones (≥ 30 mm). There were no significant differences between patients in the cholecystokinin (CCK) and no CCK groups in terms of these characteristics.