Retrospective Study
Copyright ©The Author(s) 2024.
World J Gastrointest Surg. Jan 27, 2024; 16(1): 103-112
Published online Jan 27, 2024. doi: 10.4240/wjgs.v16.i1.103
Table 1 Patient characteristics
Variable

Total (n = 100)
Control (n = 47)
UDCA (n = 53)
Age (yr), median (P25, P75)53.00 (48, 60)51 (47, 60)54 (48.5, 60)
Gender, n (%)Male44 (44)21 (44.68)23 (23.40)
Female56 (56)26 (55.32)30 (56.60)
Jaundice, n (%)Yes27 (27)12 (25.53)15 (28.30)
No73 (73)35 (74.47)38 (71.70)
Hypertension, n (%)Yes25 (25)12 (25.53)14 (26.42)
No75 (75)35 (74.47)39 (73.58)
Diabetes, n (%)Yes32 (32)14 (29.79)18 (33.96)
No68 (68)33 (70.21)35 (66.04)
History of biliary tract surgery, n (%)Yes14 (14)6 (12.77)8 (15.09)
No86 (86)41 (87.23)45 (84.91)
Parapillary diverticulum, n (%)Yes36 (36)23 (48.94)13 (24.53)
No64 (64)24 (51.06)40 (75.47)
No. of stones, n (%)≤ 349 (49)25 (53.19)24 (45.28)
> 351 (51)22 (46.81)29 (54.72)
Bile culture positive, n (%)37 (37)20 (42.55)17 (32.08)
Common bile duct diameter (mm), median (P25, P75)14.00 (13.00, 16.00)15.0 (13.0, 16.0)14.0 (12.0, 16.0)
Maximum stone diameter (mm), median (P25, P75)13.00 (12.00, 15.00)13.0 (12.0, 15.0)13.0 (11.5, 14.5)
ERCP time (min), median (P25, P75)64.00 (61.00, 68.00)63 (61, 67)64 (61, 71)
WBC (109/L, mean ± SD)6.60 ± 0.966.24 ± 1.246.60 ± 0.97
PCT (ng/mL), median (P25, P75)0.18 (0.12, 0.27)0.17 (0.12, 0.25)0.18 (0.13, 0.28)
Table 2 Comparison of clinical efficacy between control and ursodeoxycholic acid groups
Group
Efficacious
Effective
Ineffective
χ2 value
P value
Control, n (%)16 (34.04)21 (44.68)10 (21.28)3.9900.048
UDCA, n (%) 22 (41.51)27 (50.94)4 (7.55)
Table 3 Comparison of liver function indexes between control and ursodeoxycholic acid groups
GroupnTBiL (μmon/L, mean ± SD)DBiL (μmon/L, mean ± SD)GGT (U/L, mean ± SD)
Pre-treatmentPost-treatmentPre-treatmentPost-treatmentPre-treatmentPost-treatment
Control 4796.65 ± 11.2477.31 ± 8.5263.74 ± 7.4545.39 ± 5.69328.65 ± 20.45189.63 ± 16.87
UDCA 5398.63 ± 11.4255.39 ± 6.5363.36 ± 7.9632.10 ± 4.62330.25 ± 20.64142.32 ± 14.21
t value0.872-14.532-0.251-12.8960.388-15.217
P value0.385< 0.0010.803< 0.0010.699< 0.001
ALT (U/L, mean ± SD)ALP (U/L, mean ± SD)AST (U/L, mean ± SD)
Pre-treatmentPost-treatmentPre-treatmentPost-treatmentPre-treatmentPost-treatment
Control 47274.63 ± 25.41149.36 ± 15.36256.66 ± 24.12171.33 ± 22.09201.32 ± 16.35121.35 ± 11.57
UDCA 53268.54 ± 21.23112.52 ± 14.25262.36 ± 25.78122.61 ± 16.00201.11 ± 15.4796.98 ± 10.44
t value-1.306-12.4401.139-12.733-0.066-11.072
P value0.195< 0.0010.257< 0.0010.947< 0.001
Table 4 Univariate analysis of recurrence of common bile duct stones after endoscopic retro-grade cholangiopancreatography
Variables

Non-recurrent group (n = 72)
Recurrent group (n = 28)
χ2 value
P value
Age (yr, mean ± SD)54.64 ± 6.6251.43 ± 8.74-1.9830.050
Gender, n (%)Male31 (43.06)13 (46.43)0.0930.760
Female41 (56.94)15 (53.57)
Jaundice, n (%)Yes19 (26.39)8 (28.57)0.0490.825
No53 (73.61)20 (71.43)
Hypertension, n (%)Yes18 (25.00)8 (28.57)0.1340.715
No54 (75.00)20 (71.43)
Diabetes, n (%)Yes27 (37.50)5 (17.86)3.5750.059
No45 (62.50)23 (82.14)
History of biliary tract surgery, n (%)Yes12 (16.67)2 (7.14)1.5190.218
No60 (83.33)26 (92.86)
Parapillary diverticulum, n (%)Yes18 (25.00)18 (64.29)13.504< 0.001
No54 (75.00)10 (35.71)
No. of stones, n (%)≤ 346 (63.89)11 (39.29)4.9790.026
> 326 (36.11)17 (60.71)
Bile culture positive, n (%)19 (26.39)18 (64.29)12.421< 0.001
Postoperative treatment, n (%)Control26 (36.11)21 (75.00)12.240< 0.001
UDCA46 (63.89)7 (25.00)
Common bile duct diameter(mm), median (P25, P75)14.00 (12.00, 15.00)16.00 (14.00, 17.00)-3.2650.001
Maximum stone diameter(mm), median (P25, P75)12.00 (11.25, 13.75)15.00 (12.00, 16.00)-3.599< 0.001
ERCP time (min, mean ± SD)63.93 ± 5.1265.82 ± 5.331.6400.140
WBC (× 109/L, mean ± SD)6.45 ± 1.056.38 ± 1.27-0.2900.772
PCT (ng/mL), median (P25, P75)0.18 (0.12, 0.27)0.18 (0.12, 0.28)-0.0880.930
TBiL (μmon/L, mean ± SD)97.85 ± 10.9597.32 ± 12.43-0.2110.833
DBiL (μmon/L, mean ± SD)64.13 ± 7.6462.02 ± 7.76-1.2340.220
GGT (U/L, mean ± SD)330.90 ± 19.82325.88 ± 21.99-1.1020.273
ALT (U/L, mean ± SD)272.31 ± 22.87269.09 ± 24.88-0.6170.538
ALP (U/L, mean ± SD)259.81 ± 25.79259.36 ± 23.50-0.0790.937
AST (U/L, mean ± SD)201.12 ± 16.02201.44 ± 15.550.0890.929
Table 5 Variable assignment description
Variables
Assignment
Parapillary diverticulum0 = no, 1 = yes
No. of stones0 = ≤ 2, 1 = > 3
Bile culture positive0 = no, 1 = yes
Postoperative treatment0 = UDCA, 1 = control
Common bile duct diameterOriginal value
Maximum stone diameterOriginal value
Table 6 Multivariate logistic regression analysis comparing the non-recurrent group vs recurrent groups
Variables
β
SE
Wald χ2
P value
OR (95%CI)
Parapillary diverticulum1.7920.6467.6920.0066.003 (1.692-21.303)
No. of stones > 31.4430.6544.8630.0274.233 (1.174-15.263)
Bile culture positive2.0290.6639.3570.00247.606 (2.073-27.910)
Postoperative UDCA-1.2870.6284.1990.0400.072 (0.080-0.094)
Maximum stone diameter0.5270.2653.9570.0471.694 (1.008-2.847)
Constant-8.8952.36014.211< 0.001-