Table 1.
Patients' demographic and clinical characteristics
| Characteristics | Value |
|---|---|
| Age | |
| Mean ± SD (years) | 52.1 ± 10.3 |
| Range | 22-66 |
| ≤50 years | 99 (45.8%) |
| >50 years | 117 (54.2%) |
| Primary tumor histology | |
| Ductal | 184 (85.2%) |
| Lobular | 12 (5.6%) |
| Other | 20 (9.3%) |
| Primary tumor grade | |
| I | 22 (10.2%) |
| II | 180 (83.3%) |
| III | 14 (6.5%) |
| Hormonal receptor status | 184 (85.2%) |
| Positive | 143 (66.2%) |
| Negative | 73 (33.8%) |
| HER2 | |
| Positive | 42 (19.4%) |
| Negative | 174 (80.6%) |
| Ki67 | 14 (6.5%) |
| >14% | 147 (68.1%) |
| ≤14% | 69 (31.9%) |
| AJCC stage | |
| I | 76 (35.2%) |
| II | 140 (64.8%) |
AJCC: American joint committee on cancer.