Table 4 Multivariate Cox regression analyses of clinicopathological features associated with OS of patients with PDAC

TNM stage

< 0.001

< 0.001

 II vs. I

3.781 (2.844–5.025)

< 0.001

3.580 (2.481–5.165)

< 0.001

 III vs. I

7.476 (5.481–10.20)

< 0.001

5.928 (3.968–8.857)

< 0.001

G-ki67

< 0.001

< 0.001

 II vs. I

1.299 (1.038–1.624)

0.022

1.374(1.011–1.867)

0.042

 III vs. I

1.942 (1.477–2.554)

< 0.001

2.756 (1.920–3.956)

< 0.001

Adjuvant therapy, without vs. with

2.788 (2.275–3.416)

< 0.001

2.232 (1.703–2.924)

< 0.001