Table 1 Patients’ baselines before and after PSM Matched

Age

−0.110

< 0.001

0.013

0.909

  < 55

863 (27.5%)

67 (43.2%)

69 (44.5%)

67 (43.2%)

  > =55

2278 (72.5%)

88 (56.8%)

86 (55.5%)

88 (56.8%)

Sex

0.079

0.18

0.000

1

 Female

1501 (47.8%)

65 (41.9%)

65 (41.9%)

65 (41.9%)

 Male

1640 (52.2%)

90 (58.1%)

90 (58.1%)

90 (58.1%)

PTS

< 0.001

0.151

 Stamoch

317 (10.1%)

31 (20.0%)

0.146

38 (24.5%)

31 (20.0%)

−0.045

 Small intestine

2119 (67.5%)

33 (21.3%)

−0.540

43 (27.7%)

33 (21.3%)

−0.065

 Colorectum

705 (22.4%)

91 (58.7%)

0.393

74 (47.7%)

91 (58.7%)

0.110

Grade

< 0.001

< 0.001

 Well differentiation G1

901 (28.7%)

21 (13.5%)

− 0.415

31 (20.0%)

21 (13.5%)

−0.065

 Moderate differentiation G2

348 (11.1%)

112 (72.3%)

0.529

57 (36.8%)

112 (72.3%)

0.355

 Poor differentiation G3

352 (11.2%)

12 (7.7%)

−0.080

40 (25.8%)

12 (7.7%)

−0.181

 NEC

196 (6.2%)

10 (6.5%)

−0.034

27 (17.4%)

10 (6.5%)

−0.110

 Missing

1344 (42.8%)

0 (0%)

T

< 0.001

0.66

 T1

43 (1.4%)

29 (18.7%)

0.154

21 (13.5%)

29 (18.7%)

0.052

 T2

188 (6.0%)

57 (36.8%)

0.214

60 (38.7%)

57 (36.8%)

−0.019

 T3

559 (17.8%)

36 (23.2%)

−0.218

37 (23.9%)

36 (23.2%)

−0.007

 T4

434 (13.8%)

33 (21.3%)

−0.150

37 (23.9%)

33 (21.3%)

−0.026

 Missing

1917 (61.0%)

0 (0%)

PTR

−0.514

< 0.001

−0.065

0.294

 No

1412 (45.0%)

100 (64.5%)

90 (58.1%)

100 (64.5%)

 Yes

1729 (55.0%)

55 (35.5%)

65 (41.9%)

55 (35.5%)

Primary tumor size

0.011

0.901

−0.013

0.895

  < 2

307 (9.8%)

39 (25.2%)

37 (23.9%)

39 (25.2%)

  > =2

954 (30.4%)

116 (74.8%)

118 (76.1%)

116 (74.8%)

 Missing

1880 (59.9%)

0 (0%)

Extrahepatic metastases

0.253

< 0.001

0.065

0.263

 No

2730 (86.9%)

104 (67.1%)

114 (73.5%)

104 (67.1%)

 Yes

411 (13.1%)

51 (32.9%)

41 (26.5%)

51 (32.9%)