Table 4 Univariable and multivariable Cox proportional hazard analyses of prognostic factors for disease-specific survival of patients with PDAC

 < 65 years

1

1

 ≥65 years

1.59

0.65–3.89

0.312

1.40

0.39–5.09

0.608

 Female

1

1

 Male

0.76

0.33–1.77

0.525

0.59

0.19–1.86

0.366

 Head

1

 Others

1.46

0.32–6.55

0.624

N.A.

 pT1–2

1

1

 pT3–4

1.26

0.55–2.92

0.587

1.15

0.30–4.37

0.839

 Medium or high

1

1

 Low

1.19

0.45–3.13

0.728

1.05

0.27–4.09

0.942

 N0

1

1

 N1

1.09

0.45–2.62

0.847

0.90

0.31–2.61

0.841

 No

1

1

 Yes

0.42

0.15–1.18

0.101

0.37

0.10–1.34

0.130

 Low

1

1

 High

2.88

1.17–7.11

0.022

3.83

1.24–11.84

0.020

 Low

1

 High

0.64

0.25–1.63

0.349

N.A.

 Low

1

 High

1.02

0.43–2.45

0.957

N.A.