Table 1 Patient characteristics
Variable | Data |
|---|---|
Age (years) | 41 (22 to 62) |
Laterality | Â |
  Left | 132 (53.0) |
  Right | 117 (47.0) |
Histological type | Â |
  Ductal | 228 (91.6) |
  Lobular | 11 (4.4) |
  Mucinous | 5 (2.0) |
  Medullary | 5 (2.0) |
Grade | Â |
  1 | 32 (12.9) |
  2 | 132 (53.0) |
  3 | 85 (34.1) |
Tumor size (cm) | 2.2 (0.1 to 11) |
T stage | Â |
  T1 | 110 (44.2) |
  T2 | 130 (52.2) |
  T3 | 6 (2.4) |
  T4 | 3 (1.2) |
Lymph node status | Â |
  N0 | 157 (63.1) |
  N1 | 59 (23.7) |
  N2 | 25 (10.0) |
  N3 | 8 (3.2) |
Estrogen receptor | Â |
  Positive | 162 (65.1) |
  Negative | 87 (34.9) |
Progesterone receptor | Â |
  Positive | 137 (55.0) |
  Negative | 112 (45.0) |