Table 4 Cox multivariate analysis of the PDC patients’ survival rates

Degree of differentiation

Highly/moderately/poorly differentiated

.998

.385

6.720

.010

2.713

1.276

5.770

Maximal diameter of the mass

< 3 cm/3~5 cm/> 5 cm

1.536

.566

7.365

.007

4.646

1.532

14.089

TNM stage

I/II/III/IV

1.606

.588

7.460

.006

4.983

1.574

15.776

Lymph node metastasis

No/yes

1.983

.687

8.332

.004

7.265

1.890

27.925

Invasion of the surrounding tissue

No/yes

2.319

.789

8.639

.003

10.166

2.165

47.724

UGP2

−/+

1.833

.700

6.857

.009

6.253

1.586

24.656

CFL1

−/+

1.902

.695

7.489

.006

6.699

1.716

26.159