Table 3 Correlations between the relapse-free survival and clinicopathological factors

Age (≥70 years vs. <70 years)

1.611

0.882–2.942

0.121

Gender (Male vs. Female)

1.657

0.894–3.071

0.109

Tumor depth (T4 vs. T1–3)

1.617

0.879–2.976

0.123

Histological type (Poorly, Mucinous vs. Well, Moderately)

2.092

0.879–4.978

0.095

Lymphatic involvement (Positive vs. Negative)

3.837

1.367–10.767

0.011

2.563

0.879–7.471

0.085

Venous involvement (Positive vs. Negative)

1.857

0.953–3.621

0.069

Lymph node metastasis (Positive vs. Negative)

3.016

1.589–5.724

0.001

2.251

1.131–4.481

0.021

CEA (>5 ng/ml vs. ≤5 ng/ml)

2.123

1.165–3.870

0.014

1.332

0.667–2.660

0.417

CA19–9 (>37 U/ml vs. ≤37 U/ml)

3.764

1.821–7.777

<0.001

1.821

0.782–4.242

0.165

TAM (High vs. Low)

2.973

1.493–5.920

0.002

3.692

1.743–7.822

0.001