| Age group (in Years) | |||||||
| 40 - 64 (%) | 65 - 74 (%) | ≥75 (%) | p value | ||||
| Histological type | |||||||
| Ductal | 564 (90.4) | 127 (88.2) | 85 (85.0) | 0.002 | |||
| Lobular | 34 (5.5) | 5 (3.5) | 3 (3.0) | ||||
| Mucinous/mucoid | 16 (2.6) | 9 (6.3) | 12 (12.0) | ||||
| Others | 10 (1.6) | 3 (2.1) | 0 (0.0) | ||||
| Grade |
|
|
|
| |||
| 1 | 75 (12.1) | 27 (19.3) | 19 (19.6) | 0.047 | |||
| 2 | 232 (37.4) | 56 (40.0) | 36 (37.1) | ||||
| 3 | 314 (50.6) | 57 (40.7) | 42 (43.3) | ||||
| ER status | 388 (66.7) | 97 (74.1) | 65 (69.9) | 0.252 | |||
| PR status | 309 (55.0) | 72 (55.4) | 51 (54.8) | 1.000 | |||
| HER2 |
|
|
|
| |||
| Positive | 152 (34.9) | 38 (36.9) | 23 (30.3) | 0.515 | |||
| Negative | 247 (56.7) | 59 (57.3) | 43 (56.6) |
| |||
| Equivocal | 37 (8.5) | 6 (5.8) | 10 (13.2) |
| |||
| Vascular invasion | 228 (36.3) | 54 (38.0) | 28 (31.5) | 0.585 | |||
| Micro-calcification | 198 (58.1) | 47 (56.6) | 30 (51.7) | 0.650 | |||
| Breast cancer staging | |||||||
| Stage 1 | 179 (27.8) | 31 (21.1) | 19 (18.5) | < 0.001 | |||
| Stage 2 | 298 (46.4) | 75 (51.0) | 40 (38.8) | ||||
| Stage 3 | 124 (19.3) | 27 (18.4) | 19 (18.5) |
| |||
| Stage 4 | 42 (6.5) | 14 (9.5) | 25 (24.3) | ||||
| Nottingham prognostic index | |||||||
| Good | 147 (24.9) | 33 (26.2) | 28 (35.4) | 0.082 | |||
| Moderate | 276 (46.8) | 64 (50.8) | 26 (32.9) | ||||
| Poor | 167 (28.3) | 29 (23.0) | 25 (31.7) | ||||