Clinical parameters | Stage I | Stage II | ||||
---|---|---|---|---|---|---|
HR | 95%CI | P | HR | 95%CI | P | |
Age | ||||||
< 60 | Ref | Ref | ||||
≥ 60 | 2.063 | 1.772–2.401 | <0.001 | 1.263 | 1.204–1.324 | <0.001 |
Year of diagnosis | ||||||
2004–2009 | Ref | Ref | ||||
2010–2015 | 0.897 | 0.785–1.024 | 0.109 | 0.866 | 0.830–0.902 | <0.001 |
Sex | ||||||
Female | Ref | Ref | ||||
Male | 1.279 | 1.131–1.446 | <0.001 | 1.042 | 1.000–1.085 | 0.049 |
Race | ||||||
Black | Ref | Ref | ||||
White | 1.077 | 0.880–1.319 | 0.470 | 0.959 | 0.895–1.028 | 0.242 |
Other | 0.760 | 0.567–1.020 | 0.067 | 0.911 | 0.823–1.008 | 0.072 |
Primary tumor Site | ||||||
Head | Ref | Ref | ||||
Body | 0.831 | 0.690–1.002 | 0.052 | 0.975 | 0.894–1.063 | 0.568 |
tail | 0.606 | 0.512–0.718 | <0.001 | 0.909 | 0.848–0.974 | 0.007 |
Pancreatic duct | 0.856 | 0.536–1.368 | 0.517 | 0.876 | 0.725–1.058 | 0.169 |
Overlapping | 0.773 | 0.583–1.025 | 0.074 | 1.072 | 0.968–1.188 | 0.179 |
Pathological grade | ||||||
I | Ref | Ref | ||||
II | 1.811 | 1.499–2.187 | <0.001 | 1.440 | 1.331–1.559 | <0.001 |
III | 2.570 | 2.085–3.168 | <0.001 | 1.902 | 1.754–2.061 | <0.001 |
IV | 1.746 | 1.056–2.889 | 0.030 | 1.684 | 1.394–2.033 | <0.001 |
Unknown | 1.039 | 0.829–1.303 | 0.739 | 1.147 | 1.031–1.276 | 0.012 |
T | ||||||
1 | Ref | Ref | ||||
2 | 1.371 | 1.201–1.564 | <0.001 | 1.315 | 1.113–1.554 | 0.001 |
3 | – | 1.295 | 1.113–1.506 | 0.001 | ||
N | ||||||
0 | – | Ref | ||||
1 | – | 1.446 | 1.380–1.516 | <0.001 | ||
Chemotherapy | ||||||
No | Ref | Ref | ||||
Yes | 1.056 | 0.933–1.194 | 0.389 | 0.637 | 0.610–0.666 | <0.001 |
Surgical procedures | ||||||
Local excision of tumor | Ref | Ref | ||||
Pancreatectomy | 0.900 | 0.428–1.894 | 0.782 | 0.752 | 0.551–1.026 | 0.072 |
Extended | 0.962 | 0.447–2.071 | 0.922 | 0.820 | 0.598–1.123 | 0.215 |
Unknown | 1.212 | 0.529–2.775 | 0.650 | 0.791 | 0.550–1.135 | 0.203 |
Radiotherapy | ||||||
No | Ref | Ref | ||||
neoadjuvant RT | 1.468 | 1.099–1.960 | 0.009 | 0.690 | 0.617–0.770 | <0.001 |
adjuvant RT | 1.193 | 1.028–1.384 | 0.020 | 0.790 | 0.756–0.825 | <0.001 |