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Table 4 Logistic regression in relation to prolonged fluid discharge after total mastectomy with axillary lymph node dissection

From: Impact of the surgical modality for axillary lymph node dissection on postoperative drainage and seroma formation after total mastectomy

Factor Odds ratio p-value *<0.05
Body mass index < 25 vs 25 2.54 (1.08–5.96) 0.033*
Specimen weight < 400 g vs 400 g 0.83 (0.35–1.93) 0.66
Tumor size < 30 mm vs 30 mm 0.75 (0.34–1.65) 0.47
Level of axillary lymph node dissection Ax I vs II vs III 1.34 (0.72–2.48) 0.35
Number of axillary lymph nodes dissected < 15 vs 15 1.02 (0.46–2.27) 0.97
Number of metastatic lymph nodes = 0 vs 1 1.11 (0.48–2.58) 0.81
Drainage volume during 1 week < 500 ml vs 500 ml 4.25 (1.55–11.60) 0.005*
Surgical modality: Group D vs Group A vs Group B 1.86 (1.06–3.26) 0.03*
  1. Prolonged fluid discharge: prolonged drainage or seroma formation after the 20th operative day or later
  2. Group D: skin flap formation by electrocautery and axillary lymph node dissection by picking up using forceps and ligation (Surgeon D)
  3. Group A: skin flap formation by electrocautery and axillary lymph node dissection by electrocautery with ligation of the arteries and veins (Surgeons A, C and E)
  4. Group B: skin flap formation by electrocautery and axillary lymph node dissection by ultrasonic dissector without ligating the vessels (Surgeon B)