[Retracted] Risk Factors for Brain Metastasis of Hepatocellular Carcinoma

Table 1

The baseline characteristics of the included patients.

Variables	Patients
Age
<65	21445
≥65	14646
Race
Black	5106
White	24653
Others	6104
Sex
Male	27967
Female	8124
Marital status
Married	17274
Unmarried	8252
Others	10565
Tumor size
≤3 cm	8697
>3 and ≤5 cm	6560
>5 cm	11076
AFP
Positive	21427
Negative	7609
Others	7055
Vascular invasion
Yes	5366
No	17029
Unknown	13696
Fibrosis degree
F0	1763
F1	8789
Unknown	25539
N stage
N0	26167
N1	2223
Unknown	7701
Differentiated degree
High differentiation	3438
Moderately differentiated	5437
Low differentiated	2546
Undifferentiation	217
Unknown	24453
Radiotherapy
Yes	411
No	35680
Chemotherapy
Yes	15311
No	20780
Surgery
Yes	8349
No	27348
Unknown	404