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Table 2 Characteristics of the distant metastatic HCC patients after 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 After matching
Tumor size ≤ 50mm
n = 186 (50%)
Tumor size > 50mm
n = 186 (50%)
P value SMD
Age (year) 63.5 ± 11.6 62.7 ± 12.3 0.586 0.067
Race    0.513 0.038
 Black 35 (18.8) 28 (15)   
 White 122 (65.6) 132 (71)   
 Other 29 (15.6) 26 (14)   
Grade    0.541 0.014
 Well differentiated 48 (25.8) 42 (22.6)   
 Moderately differentiated 65 (34.9) 75 (40.3)   
 Poorly differentiated and undifferentiated 73 (39.3) 69 (37.1)   
Sex    0.895 0.014
 Male 150 (80.6) 151 (81.2)   
 Female 36 (19.4) 35 (18.8)   
Surgical treatment    0.309 0.049
 Wedge or segmental resection 14 (7.5) 14 (7.5)   
 Local tumor destruction 8 (4.3) 3 (1.6)   
 No surgery 164 (88.2) 169 (90.9)   
T     < 0.001 0.657
 T0, T1 52 (28) 48 (25.8)   
 T2 97 (52.2) 6 (3.2)   
 T3 26 (14) 108 (58.1)   
 T4 11 (6) 24 (12.9)   
N    0.731 0.036
 N0 131 (79.4) 134 (72)   
 N1 55 (20.6) 52 (28)   
AFP    0.543 0.063
 Negative 42 (22.6) 47 (25.3)   
 Positive 144 (77.4) 139 (74.7)   
 M All is M1