<35 years N = 741, No. (%) | ≥35 years N = 741, No. (%) | χ2 | P-value | |
T stage | 4.521 | 0.340 | ||
T1 | 243 (32.8) | 213 (28.7) |
|
|
T2 | 339 (45.7) | 358 (48.3) |
|
|
T3 | 91 (12.3) | 107 (14.4) |
|
|
T4 | 55 (7.4) | 54 (7.3) |
|
|
Unknown | 13 (1.8) | 9 (1.2) |
|
|
Lymph node status | 3.134 | 0.371 | ||
N0 | 294 (39.7) | 268 (36.2) |
|
|
N1 | 210 (28.3) | 236 (31.8) |
|
|
N2 | 124 (16.7) | 131 (17.7) |
|
|
N3 | 113 (15.2) | 106 (14.3) |
|
|
Tumor stage |
|
| 2.555 | 0.465 |
1 | 160 (21.6) | 137 (18.5) |
|
|
2 | 314 (42.4) | 335 (45.2) |
|
|
3 | 260 (35.1) | 263 (35.5) |
|
|
Unknown | 7 (0.9) | 6 (0.8) |
|
|
Histologic grade |
|
| 3.976 | 0.264 |
G1 | 68 (9.2) | 70 (9.4) |
|
|
G2 | 256 (34.5) | 279 (37.7) |
|
|
G3 | 383 (51.7) | 348 (47) |
|
|
Unknown | 34 (4.6) | 44 (5.9) |
|
|
ER | 0.396 | 0.529 | ||
Negative | 221 (22.8) | 210 (28.3) |
|
|
Positive | 520 (70.2) | 531 (71.7) |
|
|
Tumor subtype | 5.281 | 0.260 | ||
Luminal A | 89 (12.0) | 115 (15.5) |
|
|
Luminal B | 369 (49.8) | 348 (47) |
|
|
HER2 | 58 (7.8) | 47 (6.3) |
|
|
Triple-negative | 103 (13.9) | 102 (13.8) |
|
|
Unknown | 122 (16.5) | 129 (17.4) |
|
|