Table 3.
Multivariate analysis of factors influencing survival according to sex using a Cox proportional hazards model
| Characteristic |
Male |
Female |
||||
| P value | HR | 95%CI | P value | HR | 95%CI | |
| Age | ||||||
| ≤ 60 yr | 1.000 | 1.000 | ||||
| > 60 yr | 0.001 | 1.882 | 1.601-2.213 | 0.136 | 1.204 | 0.943-1.536 |
| Tumour size | ||||||
| ≤ 5 cm | 1.000 | 1.000 | ||||
| > 5 cm | 0.001 | 1.443 | 1.212-1.718 | 0.001 | 1.610 | 1.239-2.090 |
| Lymphovascular invasion | ||||||
| No | 1.000 | 1.000 | ||||
| Yes | 0.001 | 1.697 | 1.428-2.017 | 0.001 | 1.587 | 1.238-2.035 |
| Lymph node metastasis | ||||||
| No | 1.000 | 1.000 | ||||
| Yes | 0.166 | 0.890 | 0.754-1.050 | 0.437 | 0.907 | 0.709-1.161 |
| Depth of invasion | ||||||
| Muscularis propria | 0.025 | 0.521 | 0.295-0.920 | 0.736 | 1.220 | 0.385-3.866 |
| Sub-serosal | 0.044 | 0.565 | 0.324-0.986 | 0.824 | 1.139 | 0.362-3.587 |
| Serosal exposed | 0.039 | 0.551 | 0.314-0.970 | 0.986 | 0.990 | 0.311-3.147 |
| Serosal invasion | 0.264 | 0.669 | 0.330-1.354 | 0.653 | 0.693 | 0.140-3.434 |
| Histology | ||||||
| Tubular adenocarcinoma (well) | 1.000 | 1.000 | ||||
| Tubular adenocarcinoma (moderate) | 0.043 | 1.754 | 1.017-3.026 | 0.886 | 0.929 | 0.337-2.559 |
| Tubular adenocarcinoma (poor) | 0.010 | 2.029 | 1.181-3.486 | 0.739 | 0.844 | 0.312-2.282 |
| Signet ring cell carcinoma | 0.001 | 3.153 | 1.769-5.619 | 0.812 | 0.883 | 0.317-2.459 |
| Mucinous adenocarcinoma | 0.359 | 1.390 | 0.688-2.810 | 0.896 | 1.080 | 0.342-3.409 |
HR: Hazard ratio; CI: Confidence interval.