Table 2 Demographics and clinical characteristics of the study group (N = 53)
Variable | Number | Percentage |
|---|---|---|
Mean age at diagnosis, 51.9Â years | ||
Median age at diagnosis, 48.5Â years | ||
Standard deviation, 17.3 | ||
Tumor grade | ||
 I | 3 | 6 |
 II | 23 | 47 |
 III | 19 | 39 |
 Not graded | 4 | 8 |
Tumor size (cm) | ||
 ≤2 | 8 | 31 |
 2.1–5 | 11 | 42 |
 >5 | 7 | 27 |
ER | ||
 Positive | 29 | 59 |
 Negative | 20 | 41 |
PR | ||
 Positive | 19 | 40 |
 Negative | 29 | 60 |
HER2 | ||
 Positive (3) | 7 | 14 |
 Negative (0–2) | 42 | 86 |
Ki-67 | ||
 <14% (low) | 6 | 12 |
 ≥14% (high) | 43 | 88 |