Table 1 Demography and tumor characteristics
From: Skin invasion and prognosis in node negative breast cancer: a retrospective study
| Â | Â | Case | Control | Â | ||
|---|---|---|---|---|---|---|
Gender | Female | 96 | (99.0%) | 4485 | (99.7%) | p = 0.290 |
| Â | Male | 1 | (1.0%) | 15 | (0.3%) | Â |
Age | Mean | 58.8 | Â | 52.8 | Â | p < 0.001 |
|  | Range | 30–86 |  | 23–91 |  |  |
Tumor size (cm) | Median | 3 | Â | 2.2 | Â | p < 0.001 |
|  | Range | 0.8–13.0 |  | 0–20 |  |  |
Nodal status | Node Negative | 97 | (100%) | 4500 | (100%) | Â |
| Â | Node Positive | 0 | (0%) | 0 | (0%) | Â |
Histological subtype | Invasive ductal | 77 | (79.4%) | 3941 | (87.6%) | p = 0.002 |
| Â | Invasive lobular | 12 | (12.4%) | 194 | (4.3%) | Â |
| Â | Mucinous | 5 | (5.2%) | 216 | (4.8%) | Â |
| Â | Other | 3 | (3.1%) | 145 | (3.3%) | Â |
Estrogen receptor | Positive | 49 | (50.5%) | 1608 | (35.7%) | p < 0.001 |
Status | Negative | 30 | (30.9%) | 1132 | (25.2%) | Â |
| Â | Unknown | 18 | (18.6%) | 1760 | (39.1%) | Â |