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Table 1 Clinical characteristics of training group and validation group for overall survival analysis

From: Prognostic nomogram for hepatocellular carcinoma with radiofrequency ablation: a retrospective cohort study

Characteristic

Overall

Training group

Verification group

P

3142

2202

940

Marital status (%)

 Married

1674 (53.3)

1152 (52.3)

522 (55.5)

0.23

 Separated

734 (23.4)

521 (23.7)

213 (22.7)

 

 Single

734 (23.4)

529 (24.0)

205 (21.8)

 

Age (%)

  < 65

2009 (63.9)

1415 (64.3)

594 (63.2)

0.16

 65–75

803 (25.6)

545 (24.8)

258 (27.4)

 

  > 75

330 (10.5)

242 (11.0)

88 (9.4)

 

Sex (%)

 Female

762 (24.3)

547 (24.8)

215 (22.9)

0.26

 Male

2380 (75.7)

1655 (75.2)

725 (77.1)

 

Race (%)

 Other

694 (22.1)

494 (22.4)

200 (21.3)

0.68

 White

2070 (65.9)

1440 (65.4)

630 (67.0)

 

 Black

378 (12.0)

268 (12.2)

110 (11.7)

 

Histological grade (%)

 Well differentiated

455 (14.5)

311 (14.1)

144 (15.3)

0.27

 Moderately differentiated

541 (17.2)

370 (16.8)

171 (18.2)

 

 Poorly differentiated

133 (4.2)

103 (4.7)

30 (3.2)

 

 Undifferentiated

5 (0.2)

3 (0.1)

2 (0.2)

 

 Unknown

2008 (63.9)

1415 (64.3)

593 (63.1)

 

T (%)

 T1a

450 (14.3)

316 (14.4)

134 (14.3)

0.24

 T1b

1631 (51.9)

1162 (52.8)

469 (49.9)

 

 T2

891 (28.4)

601 (27.3)

290 (30.9)

 

 T3

105 (3.3)

73 (3.3)

32 (3.4)

 

 T4

65 (2.1)

50 (2.3)

15 (1.6)

 

M (%)

 M0

3105 (98.8)

2174 (98.7)

931 (99.0)

0.59

 M1

37 (1.2)

28 (1.3)

9 (1.0)

 

N (%)

 N0

3092 (98.4)

2173 (98.7)

919 (97.8)

0.08

 N1

50 (1.6)

29 (1.3)

21 (2.2)

 

Radiation therapy (%)

 Unradiation

3053 (97.2)

2137 (97.0)

916 (97.4)

0.62

 Radiation

89 (2.8)

65 (3.0)

24 (2.6)

 

Chemotherapy (%)

 Unchemotherapy

2129 (67.8)

1504 (68.3)

625 (66.5)

0.34

 Chemotherapy

1013 (32.2)

698 (31.7)

315 (33.5)

 

Tumor size (%)

 0-28 mm

1581 (50.3)

1089 (49.5)

492 (52.3)

0.28

 21-35 mm

685 (21.8)

483 (21.9)

202 (21.5)

 

  > 35 mm

876 (27.9)

630 (28.6)

246 (26.2)

 

AFP (%)

 Nomal-afp

998 (31.8)

711 (32.3)

287 (30.5)

0.35

 Up-afp

2144 (68.2)

1491 (67.7)

653 (69.5)

 

Fibersis (%)

 Non-fibersis

171 (5.4)

126 (5.7)

45 (4.8)

0.53

 Fibersis

1097 (34.9)

762 (34.6)

335 (35.6)

 

 Unknown

1874 (59.6)

1314 (59.7)

560 (59.6)

 

Survival months (median [IQR])

27.00 [15.00, 49.00]

28.00 [16.00, 50.00]

27.00 [15.00, 48.00]

0.30