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Table 3 Treatment

From: Skin invasion and prognosis in node negative breast cancer: a retrospective study

   Case Control  
Operation Total mastectomy 90 (92.8%) 3504 (77.9%) p < 0.001
  Partial mastectomy 7 (7.2%) 963 (21.4%)  
  Unknown 0 (0%) 33 (0.7%)  
Number of removed Median 22   22   p = 0.630
lymph nodes Range 5–70   5–125   
Chemotherapy Yes 28 (30.0%) 1051 (23.4%) p = 0.127
  No 69 (70.0%) 3449 (76.6%)  
Endocrine Yes 40 (41.2%) 1591 (35.4%) p = 0.138
therapy No 57 (58.8%) 2909 (64.6%)  
Radiation therapy Yes 3 (3.1%) 359 (8.0%) p = 0.081
  No 93 (96.9%) 4141 (92.0%)