. 2014 Mar 3;9(3):e90308. doi: 10.1371/journal.pone.0090308

Table 5. Multivariate Cox regression analysis of prognostic markers in 78 patients with biliary tract cancer.

Factors	Category	X²	P	HR^*	95% CI^*
Histological type	Adenocarcinoma/Papillary carcinoma	0.004	0.951	0.954	0.209–4.358
	Mucoid carcinoma/Papillary carcinoma	0.029	0.866	1.174	0.182–7.558
Lymph node invasion	Absent	0.597	0.440	0.755	0.370–1.540
	Present
SFRP1 expression	Positive	12.351	<0.0001	10.514	2.831–39.048
	Negative
β-catenin expression	Negative	2.512	0.113	0.416	0.141–1.231
	Positive

*HR hazard ratio, CI confidence interval.