Table 1.

Clinical characteristics of HCC patients before and after propensity score matching analysis

Clinical characteristics	All Patients			Patients in PSM Model
	Without PVTT (N = 274)	With PVTT (N = 42)	P	Without PVTT (N = 41)	With PVTT (N = 41)	P
Age, years			0.618			1.000
≤ 50	156	22		22	22
> 50	118	20		19	19
Gender			1.000			1.000
Male	239	37		35	35
Female	35	5		6	6
HBsAg			0.835			1.000
Negative	53	9		9	8
Positive	221	33		32	33
Liver cirrhosis			1.000			1.000
No	76	12		11	11
Yes	198	30		30	30
Child–Pugh score			0.175			1.000
A	258	37		36	36
B	16	5		5	5
No. of tumor			0.176			1.000
Single	211	28		28	28
Multiple	63	14		13	13
Largest tumor size,			0.000			1.000
≤ 5 cm	122	4		4	4
> 5 cm	152	38		37	37
Edmondson grade			0.030			1.000
I-II	167	18		19	18
III-IV	107	24		22	23
AFP, ng/mL			0.004			1.000
Low (< 400)	177	17		16	17
High (≥ 400)	97	25		25	24
BCLC stage			0.000			0.494
0-A	107	0		2	0
B + C	167	42		39	41
Preoperative CTCs			0.000			0.000
< 2	225	14		35	14
≥ 2	49	28		6	27