Table 3 Results of multivariate analysis

OS

Type of surgery

NS

ypN

.016

2.24

1.16–4.34

Vascular invasion

NS

Perineural invasion

.024

2.99

1.15–7.77

CRM of 1.5 mm

.001

4.98

1.92–12.91

DRM of 7 mm

NS

DFS

Type of surgery

NS

ypT

.005

2.65

1.35–5.19

ypN

<.001

2.96

1.74–5.02

Downstaging

NS

Lymphatic invasion

.011

2.97

1.29–6.85

Vascular invasion

NS

Perineural invasion

NS

CRM of 1.5 mm

.013

2.58

1.22–5.41

LRC

Type of surgery

NS

ypN

.006

2.74

1.34–5.64

Lymphatic invasion

NS

Vascular invasion

NS

Perineural invasion

.004

4.65

1.64–13.19

CRM of 1.5 mm

.025

3.21

1.16–8.91

DMFS

Type of surgery

NS

ypT

.007

2.55

1.29–5.06

ypN

<.001

2.55

1.29–5.06

Downstaging

NS

Lymphatic invasion

.007

3.24

1.38–7.59

Vascular invasion

NS

Perineural invasion

NS

CRM of 1.5 mm

.009

2.78

1.29–5.97