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Table 1 Pre-operative data

From: Temporary clamping of drain combined with tranexamic acid reduce blood loss after total knee arthroplasty: a prospective randomized controlled trial

Characteristics Group A Group B Group C Group D p-value
  (n = 60) (n = 60) (n = 60) (n = 60)  
Male : Female 8 : 52 9 : 51 10 : 50 8 : 52 0.946
Age (yr)* 69.8 ± 6.3 69.4 ± 6.3 68.9 ± 7.5 70.1 ± 7.2 0.418
Pre-op Hb (g/dl)* 12.5 ± 1.1 12.4 ± 1.1 12.4 ± 1.1 12.6 ± 1.0 0.515
  1. * Data was presented as mean ± standard deviation.
  2. Pre-op Hb = Preoperative hemoglobin.