Classification of anatomical morphology of cystic duct and its association with gallstone

Table 1 Clinical and demographical characteristics of the study population

Variables	Study population (n = 300)
Sex, n (%)
Male	142 (47.3)
Female	158 (52.7)
Age, mean ± SD, years	48.1 ± 13.3
BMI, kg/m2, n (%)
< 24	133 (44.3)
≥ 24	167 (55.7)
Cholesterol, median (IQR), mmol/L	4.8 (4.1-5.4)
Triglyceride, median (IQR), mmol/L	1.6 (1.1-2.2)
Morphology of CD, n (%)
Linear	117 (39)
Tortuosity	183 (61)
Site of the CD insertion into the EHBD, n (%)
Right	265 (88.3)
Nonright	35 (11.7)
Length of CD, median (IQR), mm	23.4 (17.3-29.8)
< CHD, median (IQR), degrees	31.6 (21.8-45.7)
Intrahepatic biliary anatomy, n (%)
Typical	270 (66.7)
Atypical	30 (33.3)
Group, n (%)
Gallstone	200 (66.7)
Nongallstone	100 (33.3)

BMI: Body mass index; CD: Cystic duct; EHBD: Extrahepatic bile duct; < CHD: The angle between the common hepatic duct and the cystic duct.