Table 4.

Unadjusted and adjusted Cox proportional hazards model on overall survival

	Unadjusted			Adjusted
Variable	HR	95% CI for HR	P value	HR	95% CI for HR	P value
Surgery (ref = yes)	0.1043	(0.042–0.258)	<.0001	0.1043	(0.029–0.381)	.0006
Age	1.0353	(0.99413–1.0782)	.0938	1.0170	(0.967–1.07)	.5084
Sex (ref = male)	0.9968	(0.50826–1.9547)	.9925	0.8326	(0.347–1.996)	.6812
Cycles	0.6566	(0.44745–0.96346)	.0315	0.7673	(0.34–1.73)	.5230
Pre CA19-9	1.0001	(1–1.0003)	.0523	1.0000	(0.9997–1.0003)	.9966
Post CA19-9 (post CT)	1.0008	(1.0002–1.0014)	.0105	1.0000	(0.999–1.002)	.4678
Post CA19-9 (post CR)	1.0005	(1.0001–1.001)	.0257	–	–	–
CA19-9 change	0.9999	(0.99974–1.0001)	.3470	–	–	–
% CA19-9 change	1.0714	(0.70323–1.6323)	.7482	–	–	–
Location (ref = H)	1.1752	(0.35481–3.8925)	.7916	0.8584	(0.154–4.771)	.8615
NACR	0.8805	(0.41958–1.8476)	.7364	0.5981	(0.23–1.555)	.2916

H, head of pancreas.