Table 1.
Patient and tumor characteristics
| Parameter | N (%) |
|---|---|
| Age (years) | |
| Median | 52.7 |
| Min–max | 22–79 |
| Menopausal status (at diagnosis) | |
| Postmenopausal | 548 (54.2) |
| Premenopausal | 463 (45.8) |
| Breast surgery | |
| Modified radical mastectomy | 694 (68.6) |
| Breast-conserving surgery | 315 (31.2) |
| Unknown | 2 (0.2) |
| Tumor size (cm) | |
| ≤ 2 | 302 (29.8) |
| 2–5 | 580 (57.4) |
| > 5 | 129 (12.8) |
| Nodal status | |
| 0–3 | 408 (40.4) |
| ≥ 4 | 603 (59.6) |
| Paclitaxel treatment | |
| Yes | 866 (85.6) |
| No | 145 (14.4) |
| Adjuvant radiation therapy | |
| Yes | 770 (76.2) |
| No | 214 (21.2) |
| Not reported | 27 (2.6) |
| Adjuvant hormonal therapy | |
| Yes | 804 (79.6) |
| No | 205 (20.2) |
| Not reported | 2 (0.2) |
| Histological grade | |
| I–II | 496 (49.0) |
| III | 511 (50.6) |
| Not reported | 4 (0.4) |
| ER/PgR status (informative N = 962) | |
| Positive | 737 (76.6) |
| Negative | 225 (23.4) |
| HER2 status (informative N = 976) | |
| Positive | 232 (23.8) |
| Negative | 744 (76.2) |
| Ki67 (N = 945) | |
| Median | 25 |
| Min–max | 0–98 |
| Subtypes | |
| Luminal-A | 273 (27.0) |
| Luminal-B | 327 (32.4) |
| Luminal-HER2 | 123 (12.2) |
| HER2-enriched | 103 (10.2) |
| TNBC | 122 (12.0) |
| Unknown | 63 (6.2) |