Non-invasive assessment of choledocholithiasis in patients with gallstones and abnormal liver function

Table 4 Multivariate analysis n (%)

Findings	Common bile duct stones		OR1	95%CI1
	Present	Absent
Alkaline phosphatase
< 151 U	10 (23.3)	33 (76.7)	1
151-225 U	37 (54.4)	31 (45.6)	3.1	7.00-9.88
226-300 U	21 (58.0)	15 (42.0)	4.5	1.23-16.49
> 300 U	41 (89.0)	5 (11.0)	29.8	7.28-121.54
Ultrasound findings
Normal	27 (26.5)	75 (73.5)	1
Dilatation	24 (86.0)	4 (14.0)	19.8	5.41-72.42
Stones	20 (87.0)	3 (13.0)	14.3	3.53-58.17
Both	38 (95.0)	2 (5.0)	61	13.03-285.1

¹The adjusted measure of association between risk factors and common bile duct stones was expressed as the OR with 95%CI. Adjusted or crude ORs with 95%CI that did not include 1.0 were considered significant.