Table 1.
The clinicopathological data of the patients
| Characteristic | n | % |
| Number of patients | 420 | 100 |
| Mean age in years (range) | 59.0 (23.3–91.6) | |
| Tumour size | ||
| T1 | 221 | 53 |
| T2 | 166 | 39 |
| T3 | 23 | 6 |
| T4 | 10 | 2 |
| Lymph node status | ||
| Negative | 247 | 59 |
| Positive | 166 | 39 |
| Unknown | 7 | 2 |
| Stage | ||
| I | 163 | 39 |
| II | 212 | 50 |
| III | 38 | 9 |
| Unknown | 7 | 2 |
| Histological type | ||
| Ductal | 273 | 65 |
| Lobular | 65 | 15 |
| Other | 82 | 20 |
| Histological grade | ||
| I | 108 | 26 |
| II | 192 | 46 |
| III | 120 | 28 |
| ER status | ||
| Positive | 323 | 77 |
| Negative | 95 | 22 |
| Data not available | 2 | 1 |
| PR status | ||
| Positive | 261 | 62 |
| Negative | 157 | 37 |
| Data not available | 2 | 1 |
| Menopausal status | ||
| Premenopausal | 132 | 31 |
| Postmenopausal | 288 | 69 |
| Recurrence at 5 years | ||
| No | 344 | 82 |
| Yes | 76 | 18 |
| Cause of death at 5 years | ||
| Alive | 334 | 79 |
| Breast cancer | 50 | 12 |
| Other | 36 | 9 |
ER, oestrogen receptor; PR, progesterone receptor.