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Table 1 Patients baseline clinical characteristics

From: Analysis of risk factors and prognosis of 253 lymph node metastasis in colorectal cancer patients

  253 lymph node negative group (n = 381) 253 lymph node positive group (n = 10) P
Age: years 61.0(54.0–67.0) 59.5(43.5–70.0) 0.604
Gender    0.504
 Male 135 (35.4%) 2 (20.0%)  
 Female 246 (64.6%) 8 (80.0%)  
Preoperative level of CEA (ug/L) 3.1(1.9–7.3) 8.7 (3.2–17.6) 0.083
Preoperative level of CA199 (ug/L) 12.3 (6.8–21.4) 10.3 (7.2–21.8) 0.790
Preoperative level of CA724 (ug/L) 1.9 (1.2–3.9) 1.6 (1.3–12.5) 0.779
Distance of tumour from anal verge(cm) 10.0 (6.0–16.0) 16.5 (14.8–23.5) 0.066