Table 2. Factors associated with grade misclassification.
|
Grade misclassification factors
299 HR+/HER2− infiltrating ductal carcinoma cases (%) | |||
|---|---|---|---|
| No concordance | Concordance | P | |
| Menopausal status |
|
|
0.005 |
| No | 28 (37) | 48 (63) | |
| Yes |
46 (21) |
176 (79) |
|
| Ultrasound-guided biopsy |
|
|
0.04 |
| No | 32 (32) | 67 (68) | |
| Yes |
43 (22) |
157 (79) |
|
| Median US T size (mm) |
14 (5–50) |
12 (3–100) |
0.007 |
| Median clinical T size (mm) |
15 (0–90) |
10 (0–100) |
0.02 |
| Median biopsy number |
3 (1–11) |
3 (1–9) |
NS |
| Median Bmin size (mm) |
8 (1–22) |
7 (1–22) |
NS |
| Median Bmax size (mm) |
12 (5–22) |
12 (3–30) |
NS |
| Total | 75 (25) | 224 (75) | |
Abbreviations: Bmax=biopsy maximum; Bmin=biopsy minimum; NS=not significant; T=tumour; US=ultrasound.