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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      
  No 2062 496 (92.7) 1566 (98.6) 49.989 <0.001
  Yes 61 39 (7.3) 22 (1.4)   
Lymph node metastasis      
  No 2018 470 (87.9) 1548 (97.5) 78.950 <0.001
  Yes 105 65 (12.1) 40 (2.5)   
Distant metastasis      
  No 1854 392 (73.3) 1462 (92.1) 127.7 <0.001
  Yes 269 143 (26.7) 126 (7.9)   
Any relapse      
  No 1758 328 (61.3) 1430 (90.1) 232.2 <0.001
  Yes 365 207 (38.7) 158 (9.9)   
Death      
  No 1869 404 (75.5) 1465 (92.3) 106.5 <0.001
  Yes 254 131 (24.5) 123 (7.7)   
  1. Abbreviation: Hb hemoglobin.
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