Variables | Â | Primary set | Validation set | Â | ||
---|---|---|---|---|---|---|
 |  | Multivariate analysis | Multivariate analysis | |||
 | HR | 95%CI | P-value | HR | 95%CI | P-value |
Age | 1.051 | 1.006–1.099 | 0.024 | 1.003 | 0.965–1.041 | 0.871 |
Surgery method | ||||||
 Other Method |  |  |  |  |  | |
 Whipple | 2.208 | 1.414–3.499 | 0.004 | 1.182 | 0.739–1.903 | 0.491 |
Radiation | ||||||
 Yes |  |  |  |  |  |  |
 No | 0.329 | 0.103–1.052 | 0.043 | 0.221 | 0.082–0.604 | 0.003 |
Gender | ||||||
 MALE |  |  |  |  |  |  |
 FEMALE | 2.678 | 0.994–7.211 | 0.501 | 0.561 | 0.267–1.180 | 0.127 |
AJCC Stage | ||||||
 I+ IIA |  |  |  |  |  |  |
 IIB+ III+ IV | 1.257 | 0.397–3.975 | 0.696 | 1.756 | 0.613–5.031 | 0.295 |
T Stage | ||||||
 T1 + T2 |  |  |  |  |  |  |
 T3 + T4 | 1.149 | 1.042–2.302 | 0.436 | 3.348 | 1.148–9.759 | 0.026 |
N Stage | ||||||
 N0 |  |  |  |  |  |  |
 N1 | 1.469 | 1.285–4.7444 | 0.499 | 1.573 | 0.076–4.322 | 0.998 |
Grade Stage | ||||||
 G1 |  |  |  |  |  |  |
 G2 | 1.527 | 0.085–2.824 | 0.177 | 1.312 | 0.682–2.527 | 0.416 |
 G3 + G4 | 2.297 | 1.217–4.355 | 0.610 | 2.510 | 1.279–4.928 | 0.707 |
Risk score | 1.100 | 1.062–1.139 | < 0.001 | 1.068 | 1.045–1.129 | < 0.001 |