Table 3 Terms included in the final multivariate model for the prediction of survival

Gender

0.510

0.182 to 1.433

0.20

Age

0.774

0.389 to 1.540

0.47

Surgical approach

1.076

0.494 to 2.344

0.85

Tumor classification

1.698

1.192 to 2.985

0.04

Tumor length

2.161

1.178 to 3.965

0.04

Histologic grade

2.016

1.081 to 3.763

0.03

Tumor location

0.893

0.543 to 1.468

0.65

Number of examined LNs

0.514

0.228 to 1.159

0.11