Table 4.
Frequency of breast carcinoma phenotype according to age group (χ2 test) and ER−/HER2− carcinomas
| Carcinoma phenotype | Frequency according to age group, n (%) |
P | |
|---|---|---|---|
| ≤45 years | ≥65 years | ||
| Luminal A | 33 (44.0) | 36 (54.5) | 0.1535 |
| Luminal B | 10 (13.3) | 9 (13.6) | |
| HER2 overexpression | 10 (13.3) | 12 (18.2) | |
| ER−/HER2− | 22 (29.3) | 9 (13.6) | |
| Indeterminate | 4 |
6 |
|
| Total | 79 | 72 | |
ER = Estrogen receptor.