Table 1.
Characteristics of 1995 patients enrolled in this study.
| Number of patients | |
|---|---|
| Age | |
| ~35 | 51 |
| 36–45 | 317 |
| 46–55 | 461 |
| 56–65 | 522 |
| 66 | 644 |
| Histology | |
| IDC | 1484 |
| ILC | 74 |
| DCIS | 212 |
| Others | 106 |
| Phenotype | |
| ER+ | 1540 |
| ER− | 377 |
| HER2+ | 310 |
| HER2− | 1382 |
| Ki67 high (>14) | 967 |
| Ki67 low | 721 |
| Histological grade | |
| 3 | 146 |
| 2 | 419 |
| 1 | 217 |
| Clinical stage | |
| 0 | 254 |
| I | 774 |
| II | 733 |
| III | 142 |
| IV | 53 |
| Unknown | 39 |
| Past history | |
| Ovarian cancer | 14 |
| Family historya | |
| Breast cancer | 348 |
| Ovarian cancer | 33 |
Abbreviations: IDC Invasive ductal carcinoma, ILC invasive lobular carcinoma, DCIS ductal carcinoma in situ.
aFamily history refers to reported breast or ovarian cancer in first or second-degree relative.