Risk factors of lymphatic metastasis complement poor radiological detection in gallbladder cancer

Table 4 Correlations between preoperative factors and number of positive lymph nodes (n = 32)

Variable	1 or 2 positive lymph nodes (n = 20)	3 or more positive lymph nodes (n = 12)	Univariate	Multivariate
			P value	OR	95%CI	P value
Age			0.033a	3.41	1.17-9.92	0.025a
< 60 yr (n = 28)	9	10
≥ 60 yr (n = 35)	11	2
Gender			0.043a	2.36	0.78-7.20	0.129
Male (n = 23)	14	4
Female (n = 40)	6	8
Jaundice			0.361
Present (n = 12)	16	7
Absent (n = 51)	4	5
CA 19-9 elevation			0.198
Present (n = 26)	13	5
Absent (n = 37)	7	7
CA 125 elevation			0.320
Present (n = 9)	6	1
Absent (n = 54)	14	11
CEA elevation			0.740
Present (n = 13)	16	9
Absent (n = 50)	4	3
Adjacent organ invasion at CT imaging			0.642
Present (n = 21)	13	7
Absent (n = 42)	7	5
Dilatation of common bile duct at CT imaging			0.483
Present (n = 11)	15	11
Absent (n = 52)	5	1

^aP < 0.05 between groups. CA: Carbohydrate antigen; CEA: Carcinoembryonic antigen; CT: Computed tomography.