Table 2.

Univariable Analysis in Elderly Patients with iCCA by Using Competing Risk Model in the Training Set

Variables	Gray’s Test	P-value		Cumulative Incidence Function
			12-mo	36-mo	60-mo
Age	0.119	0.729
≥70years			0.229	0.477	0.517
<70years			0.174	0.421	0.522
Sex	1.665	0.197
Male			0.201	0.460	0.583
Female			0.163	0.391	0.425
Child-pugh score	0.745	0.388
B			0.250	0.250	0.594
A			0.180	0.444	0.525
HbsAg	0.224	0.636
Positive			0.212	0.418	0.529
Negative			0.171	0.436	0.518
Portal hypertension	2.649	0.104
Present			0.136	0.318	0.415
Absent			0.230	0.460	0.546
CA19-9 level	6.672	0.010
>79 U/mL			0.247	0.524	0.569
≤79 U/mL			0.128	0.346	0.477
Maximum tumor size	5.653	0.017
>5cm			0.243	0.508	0.609
≤5cm			0.121	0.344	0.412
Tumor number	4.721	0.030
Multiple			0.310	0.552	0.581
Single			0.128	0.378	0.493
Tumor encapsulation	1.575	0.209
Incomplete			0.202	0.508	0.547
Complete			0.167	0.348	0.489
MVI	19.429	<0.001
Yes			0.357	0.724	0.775
No			0.146	0.365	0.463
Macroscopic vascular invasion	35.591	<0.001
Yes			0.358	0.679	0.761
No			0.113	0.323	0.412
Satellite nodules	4.260	0.039
Yes			0.232	0.622	0.811
No			0.178	0.407	0.487
Lymph node metastasis	7.687	<0.001
Yes			0.306	0.662	0.683
No			0.149	0.363	0.472
Extent of liver resection	0.243	0.622
Major			0.226	0.442	0.529
Minor			0.140	0.421	0.512
Operation approach	0.594	0.441
LLR			0.222	0.575	0.575
OLR			0.182	0.421	0.514

Note: Bold indicates statistically significant difference.

Abbreviations: HBsAg, hepatitis B surface antigen; CA19-9, carbohydrate antigen 19–9; MVI, microvascular invasion; LLR, laparoscopic liver resection; OLR, open liver resection.