Risk factors for recurrence of common bile duct stones after surgical treatment and effect of ursodeoxycholic acid intervention

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 diverticulum	1.792	0.646	7.692	0.006	6.003 (1.692-21.303)
No. of stones > 3	1.443	0.654	4.863	0.027	4.233 (1.174-15.263)
Bile culture positive	2.029	0.663	9.357	0.002	47.606 (2.073-27.910)
Postoperative UDCA	-1.287	0.628	4.199	0.040	0.072 (0.080-0.094)
Maximum stone diameter	0.527	0.265	3.957	0.047	1.694 (1.008-2.847)
Constant	-8.895	2.360	14.211	< 0.001	-

UDCA: Ursodeoxycholic acid.