| Variables | No of patients (%) |
| Age (y), mean ± SD | 41.4 ± 5.9 |
| Oral contraceptives: |
|
| Yes | 70 (63.1) |
| No | 41 (36.9) |
| Staging: |
|
| I | 4 (3.6) |
| II | 91 (82) |
| III | 16 (14.4) |
| Histologic type: |
|
| Invasive ductal carcinoma | 95 (85.6) |
| Invasive lobular carcinoma | 8 (7.2) |
| Other | 8 (7.2) |
| Hormone receptor: |
|
| Positive | 70 (63.1) |
| Negative | 41 (36.9) |