Table 1 Study population summary
Variable | ||
|---|---|---|
Mean age (range in years) | 53 (24–73) | |
Mean follow-up (range in years) | 9.9 (0.6–20.2) | |
Number of breast cancer deaths (%) | 582 (15) | |
5-Year survival (%) | 3316 (85) | |
Category | Number (%) | |
Age at diagnosis | ≤55 | 2330 (60) |
>55 | 1573 (40) | |
Missing | 0 | |
Grade | 1 | 753 (19) |
2 | 1625 (42) | |
3 | 1077 (28) | |
Missing | 448 (11) | |
Nodes | 0 | 2182 (56) |
1–3 | 979 (25) | |
>3 | 370 (9) | |
Missing | 372 (10) | |
Size | <20 mm | 2083 (53) |
20–49 mm | 1465 (38) | |
≥50 mm | 132 (3) | |
Missing | 223 (6) | |
ER | Negative | 772 (20) |
Positive | 2287 (59) | |
Missing | 844 (22) | |
HER2 | Negative | 2558 (66) |
Positive | 349 (9) | |
Missing | 996 (26) |
