Effects of sphincter of Oddi motility on the formation of cholesterol gallstones

Table 3 Sphincter of Oddi manometry in the process of gallstone formation

Group	SO basal pressure	CBD pressure	Amplitude of SO	Frequency of SO
Control group	26.59 ± 8.16	23.25 ± 8.35	8.72 ± 2.05	11.27 ± 3.74
3-wk group	21.25 ± 1.38	18.48 ± 1.94	8.33 ± 3.85	11.50 ± 1.64
6-wk group	27.57 ± 8.67	25.82 ± 8.26	8.03 ± 3.15	9.33 ± 3.27
9-wk group	34.11 ± 11.56	32.15 ± 11.64	5.89 ± 1.41a	7.67 ± 3.44a
12-wk group	52.38 ± 12.84c	50.11 ± 12.59e	6.82 ± 1.34	10.60 ± 3.51

^aP < 0.05,

^cP < 0.01,

^eP < 0.001 vs the control group. SO: Sphincter of Oddi; CBD: Common bile duct.