TABLE 3B.

Multivariate Cox Regression of Factors Associated with OS and RFS After Curative Resection for Hilar Cholangiocarcinoma

	Overall Survival			Recurrence Free Survival
Variable	HR	95% CI	p value	HR	95% CI	p value
No vascular resection	Reference			Reference
Portal vein resection	0.9	0.5–2.2	0.993	1.7	0.8–3.3	0.138
Hepatic artery resection	1.0	0.5–2.2	0.964	0.6	0.3–1.3	0.176
Age >60	1.3	0.8–2.2	0.273	1.1	0.7–1.7	0.777
ASA class ≥3	0.8	0.6–1.2	0.328	0.7	0.4–1.1	0.099
T stage ≥3	1.7	1.1–2.7	0.034	2.1	1.3–3.5	0.003
Grade
I	Reference			Reference
II	1.1	0.7–1.8	0.676	1.1	0.7–1.7	0.735
III	1.2	0.8–2.1	0.590	1.7	1.1–2.9	0.030
Margin status
R0	Reference			Reference
R1	1.2	0.7–1.9	0.468	1.0	0.7–1.5	0.974
Lymph node positive	2.1	1.4–3.4	0.002	2.0	1.4–3.0	<0.001

ASA class, American Society of Anesthesiologists classification.