Table 1.
Clinicopathological and demographic characteristics of patients diagnosed with breast cancer.
| Patient characteristics | |
|---|---|
| Median age at diagnosis (n = 1113) | 52 years (SD 13.5) |
| BMI (n = 1082) | |
| <25 | 488 (45.1%) |
| 25–30 | 427 (39.4%) |
| >30 | 167 (15.4%) |
| Education (n = 986) | |
| University degree | 538 (53.8%) |
| 9–12 years of education | 320 (32%) |
| Up to 8 years of education | 142 (14.2%) |
| Smoking (n = 1056) | |
| No | 802 (76%) |
| Smoker/former smoker | 254 (24%) |
| Postmenopausal (n = 1110) | 710 (64%) |
| Hormone replacement therapy | 285 (40.1%) |
| Family history of breast cancer (n = 1000) | 180 (18%) |
| Clinical staging at diagnosis (n = 1032) | |
| Stage 0 | 127 (12.1%) |
| Stage I | 530 (50.6%) |
| Stage II | 297 (28.3%) |
| Stage III | 78 (7.4%) |
| Stage IV | 14 (1.3%) |
| HER2 status (n = 933) | |
| Positive | 182 (19.5%) |
| ER-positive (n = 1105) | 848 (76.7%) |
| PR-positive (n = 1104) | 751 (68%) |
| Biological subtype (n = 933) | |
| Luminal | 617 (66.1%) |
| Triple-negative | 134 (14.4%) |
| Her2+/HR- | 75 (8%) |
| Her2+/HR+ | 107 (11.5%) |
| Histology (n = 1069) | |
| Invasive ductal carcinoma | 909 (85%) |
| Invasive lobular carcinoma | 28 (2.6%) |
| In situ ductal carcinoma | 132 (12.4%) |
| KI67 (n = 909) | |
| Negative | 28 (3.1%) |
| Low | 447 (49.1%) |
| Intermediate | 175 (19.3%) |
| High | 259 (28.5%) |