Table 1 The clinicopathologic characteristics of 1167 stage I-III colorectal cancer patients following radical resection

Gender

 Male/Female

691 (59.2)/476 (40.8)

Age (y/o)

 ≧65/<65

610 (52.3)/557 (47.7)

Maximum size (cm)

 ≧5/<5

414 (35.5)/753 (64.5)

Tumor location

 Colon/Rectum

797 (68.3)/370 (31.7)

Tumor stage

 I/II/III

302 (25.9)/425 (36.4)/440 (37.7)

T stage

 T1/T2/T3/T4

121 (10.4)/239 (20.5)/723 (61.9)/84 (7.2)

Harvested LN No^a

 ≧12/<12

807 (69.2)/360 (30.8)

Vascular invasion

 Yes/No

261 (22.4)/906 (77.6)

Perineural invasion

 Yes/No

303 (26.0)/864 (74.0)

Tumor grade

 WD/MD/PD^b

96 (8.3)/969 (83.0)/102 (8.7)

Tumor histology

 A/M/S^c

1097 (94.0)/66 (5.7)/4 (0.3)

Preoperative CEA^d (ng/ml)

 ≧5/<5

441 (35.2)/756 (64.8)

Type of surgery

 Open/Laparoscopic

967 (82.9)/200 (17.1)