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Table 2 Relationships between lymphedema and the other variables

From: Morbidity after conventional dissection of axillary lymph nodes in breast cancer patients

Patient subgroups Lymphedema P valuea
  Yes (%) No (%)  
Mean age (years) 54 ± 12 53 ± 11 0.82
Surgery - evaluation interval (months) 34 ± 24 35 ± 17 0.84
Surgery    0.1
  Mastectomy 3 32 (16.5)  
  Conservative surgery 4 161 (83.5)  
ALND incision    0.04
  The same as the breast’s 7 115 (59.5)  
  Separate 0 78 (40.5)  
Axilla status    0.11
  Positive 6 97 (50.2)  
  Negative 1 96 (49.8)  
Surgery in the dominant arm    0.25
  Yes 5 89 (46.1)  
  No 2 104 (53.9)  
Positive axilla (103): number of positive lymph nodes 9 ± 10 5 ± 4 0.2
Dissected lymph nodes 16 ± 6 14 ± 4 0.36
Postoperative seroma    0.02
  Yes 3 17 (8.8)  
  No 4 176 (91.2)  
  1. aFisher’s exact test for binary nominal variables and the Mann-Whitney test for continuous numeric variables.
  2. ALND: axillary lymph node dissection.