Retrospective Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Mar 16, 2021; 9(8): 1803-1813
Published online Mar 16, 2021. doi: 10.12998/wjcc.v9.i8.1803
Table 1 Baseline clinical characteristics of patients with common bile duct stones

Before matching, n = 257
After matching, n = 184

Large CBD, n = 146
Small CBD, n = 111
P value
Large CBD, n = 92
Small CBD, n = 92
P value
GenderMale57500.33334370.650
Female89615855
Age in yr60.2 ± 14.657.6 ± 12.40.13859.3 ± 15.357.7 ± 12.10.443
TBil in μmol/L13.6 (1.6-34.02)15.6 (4.1-33.7)0.22712.7 (2.1-34.02)13.5 (4.15-33.7)0.39
ALT in U/L48.5 (7-609)43 (6-626)0.36433 (7-609)51 (6-626)0.152
AST in U/L30 (10-881)23 (10-308)0.01226 (10-486)24 (10-308.8)0.729
GTP in U/L265 (11-2135)171 (10-1539)0.037101 (11-1240)186.5 (10-1539)0.076
Number of stoneSingle52400.94534320.759
Multiple94715860
Diameter of stones in cm1.0 (0.3-3.0)0.6 (0.2-2.0)0.0001.0 (0.3-2.5)0.6 (0.2-1.7)0.000
HypertensionNo116770.06472670.391
Yes30342025
DiabetesNo132970.44183820.809
Yes1414910
Heart diseaseNo1341020.97485830.601
Yes12979
Pulmonary diseaseNo1441070.44990901.000
Yes2422
Cerebrovascular diseaseNo1421081.00090901.000
Yes4322
Table 2 Safety profile and procedure-related short-term outcomes of the small common bile duct and large common bile duct groups


Before matching, n = 257
After matching, n = 184


Large CBD, n = 146
Small CBD, n = 111
P value
Large CBD, n = 92
Small CBD, n = 92
P value
Operating time in min115.7 ± 32.0107.2 ± 28.30.379114.7 ± 33.7106.4 ± 27.70.073
Intraoperative blood loss in mL20 (5-200)20 (5-200)0.02820 (5-200)20 (5-200)0.168
Convert to laparotomyNo1451111.0009292
Yes1000
Successful stone clearanceNo240.449221.000
Yes1441079090
Bile leakageNo1371050.79785880.351
Yes9674
BleedingNo1451111.00091921.000
Yes1010
Abdominal infectionNo1381060.72485880.351
Yes8574
PneumoniaNo1381100.10286910.123
Yes8161
Incision infectionNo1401100.23988920.129
Yes6140
Postoperative hospital stay in d7.7 ± 2.77.4 ± 3.60.4067.7 ± 2.77.3 ± 3.70.392
Table 3 Procedure-related long-term outcomes of the small common bile duct and large common bile duct groups
Before matching, n = 257
After matching, n = 184

Large CBD, n = 146
Small CBD, n = 111
P value
Large CBD, n = 92
Small CBD, n = 92
P value
Choledochal StenosisNo1461119292
Yes0000
Stone RecurrenceNo1361090.05786900.278
Yes10262