Table 3 Prevalence of relapses and deaths in patients with and without anemia
From: Impact of preoperative anemia on relapse and survival in breast cancer patients
|  | N = 2123 | Hb < 12 g/dL | Hb ≥ 12 g/dL | χ 2 | P |
|---|---|---|---|---|---|
|  |  | n = 535 (%) | n = 1588 (%) |  |  |
Local relapse | Â | Â | Â | Â | Â |
  No | 2062 | 496 (92.7) | 1566 (98.6) | 49.989 | <0.001 |
  Yes | 61 | 39 (7.3) | 22 (1.4) |  |  |
Lymph node metastasis | Â | Â | Â | Â | Â |
  No | 2018 | 470 (87.9) | 1548 (97.5) | 78.950 | <0.001 |
  Yes | 105 | 65 (12.1) | 40 (2.5) |  |  |
Distant metastasis | Â | Â | Â | Â | Â |
  No | 1854 | 392 (73.3) | 1462 (92.1) | 127.7 | <0.001 |
  Yes | 269 | 143 (26.7) | 126 (7.9) |  |  |
Any relapse | Â | Â | Â | Â | Â |
  No | 1758 | 328 (61.3) | 1430 (90.1) | 232.2 | <0.001 |
  Yes | 365 | 207 (38.7) | 158 (9.9) |  |  |
Death | Â | Â | Â | Â | Â |
  No | 1869 | 404 (75.5) | 1465 (92.3) | 106.5 | <0.001 |
  Yes | 254 | 131 (24.5) | 123 (7.7) |  |  |