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Table 2 Univariate risk factor analysis in total hip arthroplasty patients for excessive bleeding and transfusions

From: Transfusions and blood loss in total hip and knee arthroplasty: a prospective observational study

  Excessive bleeding (EBL/ kg > 17.1 mL/ kg) Allogeneic RBC transfusion
  OR 95% CI p value OR 95% CI p value
Age (years) 1.00 0.99–1.07 0.11 1.05 1.01–1.10 0.022
Sex (F) 3.39 1.37–8.38 0.008 7.04 2.19–22.63 0.001
BMI (kg/ m 2) 0.83 0.73–0.95 0.006 0.90 0.79–1.03 0.13
Weight (kg) 0.92 0.89–0.96 <0.001 0.94 0.91–0.98 0.003
NSAID (No) 1.42 0.51–3.93 0.50 0.66 0.24–1.83 0.42
ASA (No) 1.17 0.35–3.89 0.80 0.75 0.22–2.57 0.65
SSRI (No) 0.45 0.12–1.73 0.24 0.29 0.08–1.15 0.079
Hemoglobin (g/ L) 0.97 0.94–1.01 0.12 0.87 0.82–0.93 <0.001
Platelet count (10 9 /L) 1.01 1.00–1.01 0.17 1.00 1.00–1.01 0.52
PT (INR) 0.76 0.001–70.9 0.90 0.03 0.00–7.71 0.21
aPTT (s) 1.01 0.90–1.13 0.87 1.05 0.93–1.17 0.45
Operation time (minutes) 1.02 1.00–1.04 0.017 1.02 1.00–1.03 0.065
Anesthesia (spinal) 0.89 0.29–2.75 0.85 0.82 0.24–2.77 0.75
EBL/ kg   n.a.   1.17 1.09–1.26 <0.001
  1. Abbreviations: aPTT activated partial thromboplastin time, BMI body mass index, EBL estimated blood loss, LMWH low molecular weight heparin, NSAID nonsteroidal anti-inflammatory drugs, PT prothrombine time, RBC transfusion red blood cell transfusion, SSRI selective seretonine receptor inhibitor.