Table 1 Comparison of pathological and clinical features of patients with triple-negative and non-triple-negative breast cancer
Factors | Triple-negative (%) | Non-triple-negative (%) | χ 2 | P |
|---|---|---|---|---|
Age (years) | Â | Â | Â | Â |
  <40 | 8 (11.9) | 5 (4.7) | 3.148 | 0.076 |
  ≥40 | 59 (88.1) | 102 (95.3) |  |  |
Primary tumor size (diameter) | Â | Â | Â | Â |
  d<2 cm | 17 (25.4) | 14 (13.1) | 4.659 | 0.097 |
  2 ≤ d<5 cm | 43 (64.2) | 76 (71.0) |  |  |
  d ≥5 | 7 (10.4) | 17 (15.9) |  |  |
Grade | Â | Â | Â | Â |
  I and II | 48 (71.6) | 73 (80.0) | 5.764 | 0.039 |
  III | 19 (28.4) | 34 (20.0) |  |  |
Axillary node status | Â | Â | Â | Â |
  Negative | 25 (37.4) | 72 (67.3) | 4.078 | 0.048 |
  Positive | 42 (62.6) | 35 (32.7) |  |  |
TNM stage | Â | Â | Â | Â |
  I | 13 (19.4) | 16 (15.0) | 6.374 | 0.050 |
  II | 42 (62.7) | 84 (76.6) |  |  |
  III | 12 (17.9) | 9 (8.4) |  |  |
VM | Â | Â | Â | Â |
  No | 43 (64.2) | 88 (82.2) | 5.237 | 0.002 |
  Yes | 24 (35.8) | 19 (17.8) |  |  |