Table I.
Patient characteristics.
| Variable | n | % |
|---|---|---|
| Sex | ||
| Male | 239 | 65.1 |
| Female | 128 | 34.9 |
| Age, years | ||
| ≤45 | 45 | 12.3 |
| 45< × ≤60 | 130 | 35.4 |
| >60 | 192 | 52.3 |
| Adjuvant chemotherapy | ||
| No | 93 | 25.3 |
| Yes | 180 | 49.0 |
| Not available | 94 | 25.6 |
| Histological grade and type | ||
| Well differentiated | 22 | 6.0 |
| Moderately differentiated | 110 | 30.0 |
| Poorly differentiated | 173 | 47.1 |
| Signet ring cell carcinoma | 48 | 13.1 |
| Mucinous adenocarcinoma | 13 | 3.5 |
| Undifferentiated carcinoma | 1 | 0.3 |
| T-stagea | ||
| T1 | 19 | 5.2 |
| T2 | 49 | 13.4 |
| T3 | 183 | 49.9 |
| T4 | 116 | 31.6 |
| N-stagea | ||
| N0 | 78 | 21.3 |
| N1 | 84 | 22.9 |
| N2 | 100 | 27.2 |
| N3 | 105 | 28.6 |
| TNM stagea | ||
| II | 177 | 48.2 |
| III | 190 | 51.8 |
| Lymphatic invasion | ||
| Absent | 121 | 33 |
| Present | 246 | 67 |
| Venous invasion | ||
| Absent | 283 | 77.1 |
| Present | 84 | 22.9 |
| Perineural invasion | ||
| Absent | 172 | 46.9 |
| Present | 195 | 53.1 |
a
As defined by the American Joint Committee on Cancer 7th edition; TNM, Tumor-Node-Metastasis.