Variable

SE

HR

95.0% CI

P

Differentiation (well, moderate and poor)

0.202

1.156

0.778 - 1.717

0.473

TNM stage (I, II, III)

0.338

1.219

0.629 - 2.362

0.558

Perineural invasion (present vs absent)

0.316

2.180

1.174 - 4.049

0.014

LN metastasis (present vs absent)

0.5

1.605

0.603 - 4.275

0.344

Stroma SPARC (positive vs negative)

0.258

2.119

1.279 - 3.511

0.004