Tumor features in patients diagnosed between 2012–2014
| n (%) | |
|---|---|
| Known tumor grade (n = 28,932) | |
| Grade I | 4,142 (14.3) |
| Grade II | 12,558 (43.4) |
| Grade III/IV | 12,232 (42.3) |
| Known ER Status (n = 29,918) | |
| ER-positive | 26,170 (87.5) |
| ER-negative | 3,748 (12.5) |
| Known PR Status (n = 28,170) | |
| PR-positive | 22,062 (78.3) |
| PR-negative | 6,108 (21.7) |
| Known tumor size (n = 25,667) | |
| 1–10 mm | 12,144 (47.3) |
| 11–30 mm | 9,776 (38.1) |
| >30 mm | 3,747 (14.6) |
| Known tumor grade, ER and/or PR Statusa (n = 26,552) | |
| Low riskb | 14,762 (55.6) |
| Non-low risk | 11,790 (44.4) |