Table 1 Breast Cancer Characteristics – all patients and by two age groups
|  | All Patients | < 50 | ≥ 50 | p |
|---|---|---|---|---|
N | 286 | 96 | 85 | Â |
Age (year) a | ||||
 Mean + SEM | 49.3 ± 13.1 | 39.3 ± 7.8 | 60.6 ± 7.6 |  |
 Range | 4–81 | 4–49 | 49–81 |  |
Follow-up b (months) | ||||
 Mean ± SEM | 44.7 ± 47.5 | 50.2 ± 53.3 | 34.5 ± 39.9 |  |
 Range | 1.9–204 | 4–204 | 1.9–180 |  |
Breast Cancer Subtype | ||||
 Breast Carcinoma c | 61.7% | 36.5% | 49.4% | 0.192 |
 DCIS | 1.7% | 1.0% | 2.4% | |
 IDC | 28.9% | 52.1% | 35.3% | |
 ILC | 3.1% | 4.2% | 5.9% | |
 Metaplastic | 2.8% | 3.1% | 5.9% | |
 Sarcoma | 1.1% | 1.0% | 1.2% | |
 Other | 0.7% | 2.1% | 0% | |
Stage at Diagnosis | ||||
 Stage 0 | 1.9% | 0% | 3.7% | 0.005 |
 Stage I | 13.0% | 14.8% | 11.1% | |
 Stage II | 46.3% | 29.6% | 63.0% | |
 Stage III | 31.5% | 51.9% | 11.1% | |
 Stage IV | 7.4% | 3.7% | 11.1% | |
Bilateral Breast Cancer | 12.4% | 16.1% | 7.3% | 0.229 |
Second Primary | 27.3% | 19.4% | 37.5% | 0.222 |
Developed Metastatic Disease | 34.3% | 38.5% | 28.6% | 0.445 |
Dead at last follow-up | 46.7% | 50% | 41.7% | 0.520 |