Parameters | Patients, n | Median survial time | P-value | χ 2 |
---|---|---|---|---|
Gender | Â | Â | 0.016 | 5.770 |
 Male | 61 | 16 |  |  |
 Female | 18 | 11 |  |  |
Age | Â | Â | 0.419 | 0.653 |
  ≤ 60 | 43 | 14 |  |  |
  > 60 | 36 | 14 |  |  |
Tumor location | Â | Â | 0.135 | 2.233 |
 Head | 61 | 16 |  |  |
 Body, tail | 18 | 11 |  |  |
Tumor size, cm | Â | Â | 0.521 | 0.412 |
  ≤ 2 | 26 | 15 |  |  |
  > 2 | 53 | 14 |  |  |
Neural invasion | Â | Â | 0.590 | 0.29 |
 Yes | 29 | 14 |  |  |
 No | 50 | 14 |  |  |
Duodenal invasion | Â | Â | 0.329 | 0.951 |
 Yes | 11 | 12 |  |  |
 No | 68 | 16 |  |  |
Differentiation | Â | Â | 0.996 | 0.008 |
 Low | 18 | 14 |  |  |
 Median | 54 | 14 |  |  |
 High | 7 | 18 |  |  |
Lymphatic invasion | Â | Â | 0.202 | 1.625 |
 Yes | 29 | 11 |  |  |
 No | 50 | 16 |  |  |
Vascular invasion | Â | Â | 0.038 | 4.283 |
 Yes | 19 | 13 |  |  |
 No | 60 | 16 |  |  |
Liver metastasis | Â | Â | 0.000 | 48.761 |
 Yes | 12 | 5 |  |  |
 No | 67 | 16 |  |  |
TNM | Â | Â | 0.011 | 6.400 |
 I, IIa | 42 | 16 |  |  |
 IIb, III and IV | 37 | 11 |  |  |
circ-IARS | Â | Â | 0.010 | 6.633 |
 High | 40 | 11 |  |  |
 Low | 39 | 16 |  |  |
linar-IARS | Â | Â | 0.061 | 3.517 |
 High | 42 | 13 |  |  |
 Low | 37 | 16 |  |  |