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. 2022 Sep 20;12:871570. doi: 10.3389/fonc.2022.871570

Table 1.

Comparison of clinicopathological features according to CRM status before PSM.

Negative CRM (n=5160) Positive CRM (n=108) P value
Age (years) 0.512
 <60 2416 (46.8) 54 (50.0)
 ≥60 2744 (53.2) 54 (50.0)
Sex 0.477
 Male 2977 (57.7) 66 (61.1)
 Female 2183 (42.3) 42 (38.9)
Years 0.564
 2008-2013 2722 (52.8) 60 (55.6)
 2014-2018 2438 (47.2) 48 (44.4)
Location 0.024
 Left side 2378 (46.1) 38 (35.2)
 Right side 2782 (53.9) 70 (64.8)
Surgical procedures 0.603
 Laparoscopic 711 (13.8) 13 (12.0)
 Open 4449 (86.2) 95 (88.0)
Neoadjuvant therapy 0.085
 No 210 (4.1) 8 (7.4)
 Yes 4950 (95.9) 100 (92.6)
Histologic type <0.001
 Adenocarcinoma 4293 (83.2) 73 (67.6)
 Mucinous 748 (14.5) 26 (24.1)
 Signet ring cell 94 (1.8) 9 (8.3)
 Unknown 25 (0.5) 0 (0.0)
Differentiation <0.001
 Poor 1342 (26.0) 56 (51.9)
 Moderate 3468 (67.2) 44 (40.7)
 Well 107 (2.1) 1 (0.9)
 Unknown 243 (4.7) 7 (6.5)
T stage <0.001
 Tx, 0-2 894 (17.3) 1 (0.9)
 T3 1525 (29.6) 29 (26.9)
 T4 2741 (53.1) 78 (72.2)
N stage <0.001
 N0 2695 (52.2) 14 (13.0)
 N1 1581 (30.6) 38 (35.2)
 N2 884 (17.1) 56 (51.9)
M stage <0.001
 0 4319 (83.7) 57 (52.8)
 1 841 (16.3) 51 (47.2)
AJCC stage <0.001
 0-I 598 (11.6) 0 (0.0)
 II 1807 (35.0) 12 (11.1)
 III 1813 (35.1) 45 (41.7)
 IV 841 (16.3) 51 (47.2)
 Unknown 101 (2.0) 0 (0.0)
Perineural invasion <0.001
 Negative 3980 (77.1) 57 (52.8)
 Positive 1180 (22.9) 51 (47.2)
Vascular invasion <0.001
 Negative 3781 (73.3) 46 (42.6)
 Positive 1379 (26.7) 62 (57.4)

CRM, circumferential resection margin; PSM, propensity score matching.