Table 4 Multivariate analysis of variables predicting recurrence-free survival with Cox’s proportional hazard model

pT (pT1 or ≥pT2)

0.050

1.09 (0.44–2.69)

0.859

pN (pN0 or pN1)

0.015

1.04 (0.28–3.83)

0.952

pStage (pStageI vs other)

0.021

1.62 (0.29–8.93)

0.580

Lymphatic invasion (+) or (−)

0.025

1.27 (0.32–4.98)

0.740

Venous invasion (+) or (−)

0.009

1.62 (0.74–3.55)

0.230

Histological type (poor or others)

0.770

Infiltrative growth pattern (INF-c or other)

0.067

CXCR2(+)/complication(+) or other

0.001

2.51 (1.18–5.35)

0.017