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Table 1 Characteristics of the distant metastatic HCC patients before propensity score matching

From: No significant relationship exists between tumor size and prognosis in distant metastatic hepatocellular carcinoma: a propensity score matching analysis based on SEER database

Characteristic Before matching
Tumor size ≤ 50mm
n = 189 (23.5%)
Tumor size > 50mm
n = 615 (76.5%)
P value SMD
Age (year) 63.4 ± 11.5 64.6 ± 12.0 0.585 0.094
Race    0.178 0.149
 Black 37 (19.6) 89 (14.5)   
 White 123 (65.1) 410 (66.7)   
 Other 29 (15.3) 116 (18.9)   
Grade    0.088 0.142
 Well differentiated 50 (26.5) 117 (19)   
 Moderately  Differentiated 66 (34.9) 240 (39)   
 Poorly differentiated and undifferentiated 73 (38.6) 258 (42)   
Sex    0.666 0.036
 Male 153 (81) 489 (79.5)   
 Female 36 (19) 126 (20.5)   
Surgical treatment    0.052 0.139
 Wedge or segmental resection 16 (8.5) 38 (6.2)   
 Local tumor destruction 8 (4.2) 10 (1.6)   
 No surgery 165 (87.3) 567 (92.2)   
T     < 0.001 0.657
 T0, T1 53 (28) 151 (24.6)   
 T2 98 (51.9) 19 (3.1)   
 T3 27 (14.3) 367 (59.7)   
 T4 11 (5.8) 78 (12.7)   
N    0.423 0.666
 N0 134 (70.9) 417 (67.8)   
 N1 55 (29.1) 198 (32.2)   
AFP    0.167 0.115
 Negative 45 (23.8) 118 (19.2)   
 Positive 144 (76.2) 497 (80.8)   
 M All is M1