Table 1 Clinicopathological characteristics of younger (<35) and older age groups
From: Young age: an independent risk factor for disease-free survival in women with operable breast cancer
Characteristics | Age <35 (%) (n = 256) | Age ≥ 35 (%) (n = 1784) | P value |
|---|---|---|---|
Age | Â | Â | Â |
20–25 | 9 (3.5) |  |  |
26–30 | 56 (21.9) |  |  |
31–35 | 191 (74.6) |  |  |
36–40 |  | 318 (17.8) |  |
41–50 |  | 791 (44.3) |  |
51–60 |  | 474 (26.6) |  |
60–70 |  | 165 (9.2) |  |
71- | Â | 36 (2.0) | Â |
Family historya | 22 (8.7) | 135 (7.6) | 0.511 |
Histology | Â | Â | Â |
Ductal | 238 (93.0) | 1624 (91.0) | Â |
Lobular | 2 (0.8) | 30 (1.7) | Â |
Medullary | 10 (3.9) | 29 (1.6) | 0.018 |
others | 6 (2.3) | 101 (5.7) | Â |
T stage | Â | Â | Â |
T1 | 99 (38.7) | 770 (43.2) | Â |
T2 | 129 (50.4) | 855 (47.9) | Â |
T3–4 | 28 (10.9) | 159 (8.9) | 0.126 |
Lymph node metastasis | Â | Â | Â |
Negative | 138 (53.9) | 1063 (59.6) | Â |
Positive | 118 (46.1) | 721 (40.4) | 0.084 |
Histological grade | Â | Â | Â |
1–2 | 78 (58.6) | 525 (60.0) |  |
3 | 55 (41.4) | 350 (40.0) | 0.767 |
Nuclear grade | Â | Â | Â |
1–2 | 113 (52.6) | 901 (61.3) |  |
3 | 102 (47.4) | 570 (38.7) | 0.015 |
ER | Â | Â | Â |
Positive | 97 (47.1) | 907 (51.8) | Â |
Negative | 109 (52.9) | 843 (48.2) | 0.198 |
PR | Â | Â | Â |
Positive | 73 (36.7) | 708 (43.5) | Â |
Negative | 126 (63.3) | 921 (56.5) | 0.068 |
c-erbB2 | Â | Â | Â |
Negative | 94 (52.8) | 647 (46.4) | Â |
Positive | 84 (47.2) | 748 (53.6) | 0.106 |