Table 3 Multivariate analyses of factors associated with recurrence, metastasis and survival

Overall Survival

VM, Positive vs Negative

-2.117

1.286

3.425

0.003

Recurrence, Yes vs No

-1.821

1.363

3.639

0.020

TNM stage, Ivs IIvs IIIvs IV

1.367

1.080

1.732

0.009

Radiotherapy, Yes vs No

2.872

1.764

4.678

<0.0001

Disease-free Survival

VM, Positive vs Negative

-1.733

1.202

2.498

0.003

Radiotherapy, Yes vs No

2.756

1.893

4.012

<0.0001