Table 4 Multivariate Cox regression analysis of independent factors influencing overall and disease free survival

 CK20 blood^a

positive vs. negative

1.94

1.0–3.7

0.042

 Age [years]

<70 vs. >70

2.7

1.4–5.4

0.004

 pN stage

pN0 vs. pN1/2

0.7

0.2–2.7

0.62

 pT stage

pT1/2 vs. pT3/4

3.3

1.3–8.4

0.015

 UICC stage

I + II vs. III + IV

6.4

1.6–26.3

0.01

 CK20 blood^a

positive vs. negative

1.94

1.1–3.7

0.044

 pN stage

pN0 vs. pN1/2

1.39

0.3–5.8

0.65

 pT stage

pT1/2 vs. pT3/4

2.88

1.1–7.5

0.03

 UICC stage

I + II vs. III + IV

4.9

1.0–23.7

0.045