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Table 1 Baseline characteristics of 1095 colorectal cancer patients by tumor location

From: Different clinicopathologic features and favorable outcomes of patients with stage III left-sided colon cancer

Characteristic Right colon (%) Left colon (%) P value
N = 249 (22.7 %) N = 846 (77.3 %)
Age (years, mean ± SD) 64.94 ± 13.49 63.82 ± 12.85 0.233
Gender    0.118
 Female 119 (47.8) 357 (42.2)
 Male 130 (52.2) 489 (57.8)
Tumor size    0.003*
  < 5 cm 121 (48.8) 495 (59.4)
  ≥ 5 cm 127 (51.2) 339 (40.6)
Histology    <0.001*
 Well 20 (8.2) 51 (6.2)
 Moderately 181 (74.5) 704 (85.7)
 Poorly 42 (17.3) 66 (8.0)
AJCC Stagea (Initial diagnosis)    0.016*
 I 28 (11.2) 164 (19.4)
 II 101 (40.6) 286 (33.8)
 III 80 (32.1) 251 (29.7)
 IV 40 (16.1) 145 (17.1)
Tumor depth    0.017*
 T1 12 (4.8) 59 (7.0)
 T2 24 (9.7) 139 (16.5)
 T3 199 (80.3) 591 (70.4)
 T4 13 (5.2) 51 (6.1)
Lymph Node metastasis    0.677
 N0 142 (57.3) 491 (58.7)
 N1 62 (25.0) 217 (25.9)
 N2 44 (17.7) 129 (15.4)
Lymph Node metastasis    0.694
 No 142 (57.3) 491 (58.7)
 Yes 106 (42.7) 346 (41.3)
Vascular invasion    0.529
 No 163 (66.5) 561 (68.7)
 Yes 82 (33.5) 256 (31.3)
Perineural invasion    0.833
 No 157 (63.8) 516 (63.1)
 Yes 89 (36.2) 302 (36.9)
Pre-op serum CEAb level    0.496
  < 5 ng/ml 121 (51.5) 424 (54.0)
  ≥ 5 ng/ml 114 (48.5) 361 (46.0)
Post-op serum CEAb level    0.023*
  < 5 ng/ml 158 (68.1) 594 (75.6)
  ≥ 5 ng/ml 74 (31.9) 192 (24.4)
Pre-op serum Albumin level (g/dl) 3.56 ± 0.44 3.63 ± 0.45 0.062
Diabetes mellitus    0.731
 Yes 60 (24.1) 195 (23.0)
 No 189 (75.9) 651 (77.0)
Chemotherapy    0.427
 Yes 161 (64.9) 570 (67.6)
 No 87 (35.1) 273 (32.4)
Cardiac disease    0.764
 Yes 103 (41.4) 359 (42.4)
 No 146 (58.6) 487 (57.6)
Renal disease    0.690
 Yes 13 (5.2) 39 (4.6)
 No 236 (94.8) 807 (95.4)
BMIc 23.53 ± 4.25 23.63 ± 3.62 0.758
  1. aAJCC American Joint Commission on Cancer
  2. bCEA Carcinoembryonic antigen
  3. cBMI Body mass index
  4. *Indicated P < 0.05