Case Control Study
Copyright ©The Author(s) 2024.
World J Gastrointest Surg. Feb 27, 2024; 16(2): 307-317
Published online Feb 27, 2024. doi: 10.4240/wjgs.v16.i2.307
Table 1 Clinical and demographical characteristics of the study population
Variables
Study population (n = 300)
Sex, n (%)
    Male142 (47.3)
    Female158 (52.7)
Age, mean ± SD, years48.1 ± 13.3
BMI, kg/m2, n (%)
    < 24133 (44.3)
    ≥ 24167 (55.7)
Cholesterol, median (IQR), mmol/L4.8 (4.1-5.4)
Triglyceride, median (IQR), mmol/L1.6 (1.1-2.2)
Morphology of CD, n (%)
    Linear117 (39)
    Tortuosity183 (61)
Site of the CD insertion into the EHBD, n (%)
    Right265 (88.3)
    Nonright35 (11.7)
Length of CD, median (IQR), mm23.4 (17.3-29.8)
< CHD, median (IQR), degrees31.6 (21.8-45.7)
Intrahepatic biliary anatomy, n (%)
    Typical270 (66.7)
    Atypical30 (33.3)
Group, n (%)
    Gallstone200 (66.7)
    Nongallstone100 (33.3)
Table 2 Univariate analysis and multivariate logistic regression analysis of the risk factors for gallstones
VariablesUnivariate
Multivariate
Gallstone group (n = 200)
Nongallstone group (n = 100)
P value
OR (95%CI)
P value
Sex, n (%)
    Male79 (39.5)63 (63)< 0.001
    Female121 (60.5)37 (37)3.32 (1.77-6.21)< 0.001
Age, median (IQR), years49.00 (38-59)48 (41.00-56.8)0.857
BMI, kg/m2, n (%)
    < 2476 (38)57 (57)0.002
    ≥ 24124 (62)43 (43)2.51 (1.35-4.66)0.004
Cholesterol, median (IQR), mmol/L4.9 (4.3-5.4)4.5 (3.8-5.3)0.01
Triglyceride, median (IQR), mmol/L 1.67 (1.2-2.3)1.5 (1.0-2.0)0.025
Morphology of CD, n (%)
    Linear43 (21.5)74 (74)< 0.001
    n-shaped108 (54)15 (15)10.97 (5.22-23.07)< 0.001
    S-shaped28 (14)8 (8)4.43 (1.64-11.95)0.003
    W-shaped21 (10.5)3 (3)7.74 (1.88-31.78)0.005
Site of the CD insertion into the EHBD, n (%)
    Right177 (88.5)99 (99)0.011
    Left16 (8)1 (1)
    Front2 (1)0 (0)
    Back5 (2.5)0 (0)
Length of CD, median (IQR), mm24.5 (19.6-32.4)18.9 (13.5-27.1)< 0.001
< CHD, median (IQR), degrees 31.0 (21.9-44.9)33.4 (21.2-50.8)0.576
Intrahepatic biliary anatomy, n (%)
    Typical178 (89)92 (92)0.414
    Atypical22 (11)8 (8)