Table 1.
Patients demographics
| Variable | Number | % or ranges |
|---|---|---|
| Median age in years | 53.4 | 45.0‐62.7 |
| Histology, N (%) | ||
| Ductal | 490 | 82 |
| Lobular | 54 | 9 |
| Other | 53 | 8 |
| Missing | 4 | <1 |
| Type of breast surgery | ||
| Mastectomy | 242 | 40 |
| Breast‐conserving surgery | 354 | 49 |
| Missing | 5 | 1 |
| Type of axillary surgery | ||
| Sentinel lymph node biopsy | 268 | 45 |
| Axillary dissection | 328 | 55 |
| Missing | 5 | 1 |
| Type of adjuvant chemotherapy | ||
| FEC90 or FEC100 | 387 | 64 |
| AC o EC | 133 | 22 |
| TC | 81 | 14 |
FEC90, 5‐fluorouracil (600 mg/m2), epi‐doxorubicin (90 mg/m2), cyclophosphamide (600 mg/m2); FEC100, 5‐fluorouracil (500 mg/m2), epi‐doxorubicin (100 mg/m2), cyclophosphamide (500 mg/m2); AC, doxorubicin (60 mg/m2), cyclophosphamide (600 mg/m2); EC, epi‐doxorubicin (90 mg/m2), cyclophosphamide (600 mg/m2); TC, docetaxel (75 mg/m2), cyclophosphamide (600 mg/m2).