Table 3.

Multivariate analysis for OS and CSS after PSM

Characteristics	OS		CSS
	HR (95% CI)	P value	HR (95% CI)	P value
Age (Years)
30-49	Reference		Reference
50-69	0.746 (0.300, 1.854)	0.528	1.157 (0.377, 3.551)	0.799
70-84	0.840 (0.323, 2.187)	0.721	1.201 (0.375, 3.851)	0.758
Gender
Male	Reference		Reference
Female	0.558 (0.339, 0.919)	0.022	0.597 (0.327, 1.088)	0.092
Race
White	Reference		Reference
Black	1.708 (0.999, 2.923)	0.051	1.379 (0.667, 2.849)	0.386
Other	0.570 (0.324, 1.005)	0.052	0.510 (0.279, 0.933)	0.029
Year of diagnosis
2004-2007	Reference		Reference
2008-2011	0.744 (0.442, 1.255)	0.268	0.585 (0.310, 1.102)	0.097
2012-2015	0.763 (0.462, 1.259)	0.290	0.510 (0.281, 1.069)	0.029
Marital status
Married	Reference		Reference
Single	0.818 (0.544, 1.229)	0.333	0.853 (0.517, 1.408)	0.535
Other	1.214 (0.545, 2.704)	0.635	1.624 (0.695, 3.796)	0.263
AJCC staging
I	Reference		Reference
II	1.250 (0.768, 2.035)	0.370	1.366 (0.762, 2.447)	0.295
III	2.335 (1.402, 3.889)	0.001	2.129 (1.158, 3.913)	0.015
IV	5.475 (2.726, 10.994)	<0.001	5.582 (2.535, 12.291)	<0.001
Unknown	0.666 (0.268, 1.658)	0.382	0.789 (0.225, 2.767)	0.711
Tumor number
1	Reference		Reference
2	1.282 (0.802, 2.050)	0.299	1.185 (0.427, 3.291)	0.745
3	0.389 (0.091, 1.658)	0.202	N
Chemotherapy
Yes	Reference		Reference
No/Unknown	1.001 (0.631, 1.586)	0.998	0.864 (0.496, 1.507)	0.607
Surgery
Transplantation	Reference		Reference
Liver resection	2.189 (1.056, 4.538)	0.035	4.100 (1.567, 10.725)	0.004
Non-liver resection	3.346 (1.635, 8.847)	0.001	6.336 (2.440, 16.452)	<0.001
Radiotherapy
Internal radiotherapy	Reference		Reference
External radiotherapy	1.706 (1.134, 2.566)	0.010	1.828 (1.117, 2.990)	0.016
Internal and external radiotherapy	0.925 (0.109, 7.824)	0.943	1.388 (0.128, 15.037)	0.787
Unknown	0.689 (0.202, 2.354)	0.552	0.840 (0.233, 3.022)	0.789
Time of radiotherapy
Pre-surgery	Reference		Reference
Post-surgery	1.702 (1.154, 2.510)	0.007	2.131 (1.296, 3.504)	0.003