Table 1 Patient characteristics (N = 1332)
Variable | number | % | |
|---|---|---|---|
Age (years) | < 50 | 454 | 34.2% |
≥50 | 874 | 65.8% | |
Tumour size (mm) | < 20 | 646 | 48.7% |
≥20 | 681 | 51.3% | |
Nodal stage | 1 | 810 | 60.8% |
2 | 406 | 30.5% | |
3 | 111 | 8.3% | |
Grade | 1 | 202 | 15.2% |
2 | 459 | 34.5% | |
3 | 666 | 50.2% | |
ER status | negative | 314 | 23.8% |
positive | 1005 | 76.2% | |
HER2 status | negative | 1102 | 86.7% |
positive | 169 | 13.3% | |
Vascular invasion | negative | 733 | 55.0% |
suspected (probable) | 153 | 11.5% | |
positive (definite) | 435 | 32.7% | |
Distant metastasis | negative | 826 | 62.5% |
positive | 496 | 37.5% |